Someone was looking for floor mats the other day for a toddler.
These aren't very pretty, but they are $15 for 6 2ftx2ft interlocking mats. and if you use the coupon code HOLYCRAPITSCOLD you should get 20% off everything you buy. (Or so I'm told at woot.com)
I'm sorry, I'm off to bed and too tired to comb through my comments to find out who you are.