make sure there isn't anything it can be hung up, no collars, no tags. MAke sure there isn't anything that he would want to stick his face out to get at or whatever.

Oh, turn on a radio or tv but very softly, not very loud as their hearing is really sensitive they can hear 100 times more or so than humans can.

We used those solid crates and no problems with those we had with them.

Make it really comfortable for them and make sure he has lots of room to turn and walk in and stand up in and sleep in as dogs like to stretch out.

You can put something on the sides if you feel uncomfortable and worry. Like parents put pads on the crib sides, you could do that.

Also make sure your puppy can get water whenever needs too as they drink a lot. And food and is there someone to take it out for potty times?