Wonderworld Handysitt

Here's a nice alternative to a highchair or those plastic booster chairs that I find so hard to clean. It hooks securely over the chair back and straps underneath the seat for stability. The Handysitt also folds compactly for easy storage too. Made of solid beech and steel, it's appropriate for ages 7 months to 4 1/2 years.

$95 at Modern Nursery.