What a great idea! table cloth and play tent in one. Utilize that wonderful play space under the table. You can just take it off when guests come if you want a formal look--I'd just leave it on since I've already got a big plastic slide and 3 seater crocodile teeter totter in the same room. =)
Great sensory play for little ones! How to Color Beans for Play and Art from Fun at Home with Kids
Homemade floam is easy to make and SO FUN! Much cheaper than store bought, too!