The families of new puppies are now involved in the process of crate training.  This is an important thing for a young dog since it helps with outdoor potty training, and also keeps your puppy safe, when you cannot be with him/her.   Our litter spent time in a large crate as a group, but they did not spend much time alone in a small crate.  I will incorporate more individual puppy crate training into my program for future litters.
I wanted to share some information to help you all in your crate training efforts.  ....Keep the crate positive, by introducing it when the puppy has already spent a lot of his energy in playtime.  Put him in it for a few minutes at a time and give him treats when puppy is quiet in his crate.  Avoid rewarding your puppy for whining in his crate by taking him out when he complains.
Here's some more extensive tips from the Humane Society.
Step 1: Introduce your dog to the crate
Place the crate in an area of your house where the family spends a  lot of time, such as the family room. Put a soft blanket or towel in the  crate. Take the door off and let the dog explore the crate at his  leisure. Some dogs will be naturally curious and start sleeping in the  crate right away.  If yours isn't one of them:
- Bring him over to the crate, and talk to him in a happy tone of  voice. Make sure the crate door is open and secured so that it won't hit  your dog and frighten him. 
 
- Encourage your dog to enter the crate by dropping some small food  treats nearby, then just inside the door, and finally, all the way  inside the crate. If he refuses to go all the way in at first, that's  okay; don't force him to enter. 
 
- Continue tossing treats into the crate until your dog will walk  calmly all the way into the crate to get the food. If he isn't  interested in treats, try tossing a favorite toy in the crate. This step  may take a few minutes or as long as several days.
 
Step 2: Feed your dog his meals in the crate
After introducing your dog to the crate, begin feeding him his  regular meals near the crate. This will create a pleasant association  with the crate.
- If your dog is readily entering the crate when you begin Step 2, place the food dish all the way at the back of the crate. 
 
- If he remains reluctant to enter the crate, put the dish only as far  inside as he will readily go without becoming fearful or anxious. Each  time you feed him, place the dish a little further back in the crate. 
 
- Once your dog is standing comfortably in the crate to eat his meal,  you can close the door while he's eating. The first time you do this,  open the door as soon as he finishes his meal. With each successive  feeding, leave the door closed a few minutes longer, until he's staying  in the crate for ten minutes or so after eating. 
 
- If he begins to whine to be let out, you may have increased the  length of time too quickly. Next time, try leaving him in the crate for a  shorter time period. If he does whine or cry in the crate, don’t let  him out until he stops. Otherwise, he'll learn that the way to get out  of the crate is to whine, so he'll keep doing it.
 
Step 3: Lengthen the crating periods
After your dog is eating his regular meals in the crate with no sign  of fear or anxiety, you can confine him there for short time periods  while you're home.
- Call him over to the crate and give him a treat. 
 
- Give him a command to enter, such as "kennel." Encourage him by pointing to the inside of the crate with a treat in your hand. 
 
- After your dog enters the crate, praise him, give him the treat, and close the door. 
 
- Sit quietly near the crate for five to ten minutes, and then go into  another room for a few minutes. Return, sit quietly again for a short  time, and then let him out of the crate. 
 
- Repeat this process several times a day, gradually increasing the  length of time you leave him in the crate and the length of time you're  out of his sight. 
 
- Once your dog will stay quietly in the crate for about 30 minutes  with you mostly out of sight, you can begin leaving him crated when  you're gone for short time periods and/or letting him sleep there at  night. This may take several days or several weeks.
 
Step 4, Part A: Crate your dog when you leave
After your dog can spend about 30 minutes in the crate without  becoming anxious or afraid, you can begin leaving him crated for short  periods when you leave the house.
- Put him in the crate using your regular command and a treat. You  might also want to leave him with a few safe toys in the crate. 
 
- Vary at what point in your "getting ready to leave" routine you put  your dog in the crate. Although he shouldn't be crated for a long time  before you leave, you can crate him anywhere from five to 20 minutes  prior to leaving. 
 
- Don't make your departures emotional and prolonged—they should be  matter-of-fact. Praise your dog briefly, give him a treat for entering  the crate, and then leave quietly.
 
When you return home, don't reward your dog for excited behavior by  responding to him in an excited, enthusiastic way. Keep arrivals low key  to avoid increasing his anxiety over when you will return. Continue to  crate your dog for short periods from time to time when you're home so  he doesn't associate crating with being left alone.
Step 4, Part B: Crate your dog at night
Put your dog in the crate using your regular command and a treat.  Initially, it may be a good idea to put the crate in your bedroom or  nearby in a hallway, especially if you have a puppy. Puppies often need  to go outside to eliminate during the night, and you'll want to be able  to hear your puppy when he whines to be let outside.
Older dogs, too, should initially be kept nearby so they don't associate the crate with social isolation.
Once your dog is sleeping comfortably through the night with his  crate near you, you can begin to gradually move it to the location you  prefer, although time spent with your dog—even sleep time—is a chance to  strengthen the bond between you and your pet.
Potential problems
Whining. If your dog whines or cries while in the  crate at night, it may be difficult to decide whether he's whining to be  let out of the crate, or whether he needs to be let outside to  eliminate. If you've followed the training procedures outlined above,  then your dog hasn't been rewarded for whining in the past by being  released from his crate. If that is the case, try to ignore the whining.  If your dog is just testing you, he'll probably stop whining soon.  Yelling at him or pounding on the crate will only make things worse.
If the whining continues after you've ignored him for several  minutes, use the phrase he associates with going outside to eliminate.  If he responds and becomes excited, take him outside. This should be a  trip with a purpose, not play time. If you're convinced that your dog  doesn't need to eliminate, the best response is to ignore him until he  stops whining. Don't give in; if you do, you'll teach your dog to whine  loud and long to get what he wants. If you've progressed gradually  through the training steps and haven't done too much too fast, you'll be  less likely to encounter this problem. If the problem becomes  unmanageable, you may need to start the crate training process over  again.
Here's a nice video from the humane society about crates and the pen as an alternative for longer periods of time.
http://video.humanesociety.org/video/775461494001
Hope this helps!