More ideas from marisa
party decorating with palm leaves - Google Search

Luau Party Decor: Palm Tree Centerpieces Top the buffet table with Palm trees made from recycled green soda bottles, paper towel tubes, and twine.

Here's a great experiment for collecting gas (and showing one of the signs of a chemical reaction).

Helium balloons without helium -- water & vinegar in bottle, baking soda in balloon

Como inflar un globo y que flote sin usar Helio ni maquinas - Taringa!

Como inflar un globo y que flote sin usar Helio ni maquinas - Taringa!