I left the top off of my viv, got distracted, noticed it later, and of course my baby was gone! I got my family to help me turn the house upside down. I was sure I'd never see her again. Finally, we set out some pinkies in paper bags (thinking we'd hear her go into one) because I knew she'd be hungry. Hours later I was walking into the kitchen (I'd also turned out most of the lights since she's more active in the dark) and there she was just sittin on the floor, near one of the bags! I cannot tell you how relieved I was. Some tips: put a line of cornstarch or flour across the door entries. You may be able to tell if she crawled into a room by that. Put pinkies in soda bottles with air holes poked in them, and maybe you'll find her in one! I know just how you feel! I'll bet she'll turn up. Good luck!!