LOVE LOVE LOVE the Nuby Step-Up Stool. As a Nuby blogger, I received one to review.
It has bright colors, no skid (on the base!) and it holds up to 800lbs! It is SUPER great for my 3 1/2 year old to wash his hands. Here is ours...
We don't have much space at the sink, so little guy stores his stuff and uses the stool while he needs it. This was right after he brushed teeth and got ready in the morning.
You can buy these at BuyBabyDirect.com