Soooo funny. Unfortunately, I can relate. Chloe had the same pattern that your Cam seems to - starting in her bed, moving to ours, then ultimately ending on the floor. And we have travertine tile in our bedroom.
She's good now, but for awhile we were rigging up the bed with booby-traps all around it so we could hear her before she made her great plunge. We put things that made a great deal of noise around the perimeter of the mattress so that either she would unwittingly crawl over them, or they would fall on the floor before she ever did. Either way it worked, and it would always wake us before she got into trouble. (We usually used some of her toys strategically placed around the sides and end, but in a pinch I have been known to use things like bags of tostitos. Can you imagine if someone walked in and saw that?)
Fortunately, Tristan could care less about being in our bed and he is perfectly content to have his privacy. So far.
Chloe (8/6/01) 35 weeks, p/e, hellp
Tristan (9/3/03), 32 weeks, p/e and hellp AGAIN