Well, I probably won't be of much help--my crib ended up as a giant laundry basket instead of a baby holder, heh. But if you want to make it a fun place to be, try sticking him in there with some toys while the sun is up and the room is bright. Play lively music and play with him... toss him a soft ball or toy and make it fun to be in there. He will pick up on your tension when it comes time to put him down for a nap/to bed. So try your best to keep up a happy, cheerful demeanor. Fake it till you make it.
If you do the "play time" bit I suggested, you can put him in there later to play on his own, while you're still in the room, though occupied with something other than him. Fold laundry in there while he plays. Make it a place that isn't something to dread, but a place he associates good times with.
at 9:33 PM on Jul. 7, 2008