Roll Out the Marble relay race... as many teams as you want. This is from Disney's website for families - full of fun ideas.
Learn how to make a Cardboard Foosball Table or for more inspiration, click the link
Lego marble maze
Marble slides. This site has lots of cool science activities using everyday materials.
This is the CUTEST idea I have ever seen for teaching about forces and motion! A MUST have!
Force and Motion Fun! -Picture Perfect Science Stations - Chapter 14
Sarahs First Grade Snippets: Force and Motion First Grade Style
Primary Punch: Little Pig, Little Pig. Force and Motion