Toothpick/Marshmallow construction

Get out a box of toothpicks and a bag of miniature marshmallows, then let your kids build the biggest tower or bridge that they can. You may need to show them how to fit the pieces together, and I'm sure there will be a little snacking going on during the building, but it is all in good fun. You can also have the kids try this with gumdrops or other gummy candies instead of (or in addition to) the marshmallows). Kids can either work together to build, or they can each make their own construction.