... She keeps hitting her head on the crib bars and waking up! She moves around a lot in her sleep. I swear she's doing acrobatic stuff. She'll sit up, flop around, turn over, downward dog, you name it. However, when doing these acrobatics, she smacks her head on the crib sides. I can hear it from the other room. She then wakes up screaming and has to be soothed to sleep. This happens EVERY SINGLE HOUR AND A HALF!
Suggestions? A bumper is out because she also smooshes her face into the crib bars.

Re: DD USED to sleep, but now...
Ugh! I'm sorry he's in it, too! DH just told me to sleep with DD in our bed tonight so I can get more than an hour and a half of sleep at a time... It's SO tempting but she's too much of a mover and she'll probably roll off.
these
https://www.google.com/search?q=crib+wonder+covers&source=lnms&tbm=isch&sa=X&ei=1tq7UcCvOorC9QTw9YDIAg&ved=0CAcQ_AUoAQ&biw=1366&bih=604
i think they are pretty expensive, but maybe you are (or know someone) who can sew?
They make breathable bumpers.