Roll a Rainbow

Players take turns rolls a die with the colors of the rainbow on it; whichever color turns up, the player gets to fill in that color on their rainbow.  Whoever fills in all the colors on their rainbow first wins.

This activity only worked so-so.  I colored the sides of a die with dry colored dry erase marker.  As you might imagine, the colors rubbed off after a while. I think it would have been better just to paint a die with acrylic paint, but for some reason I didn't have any red; so we did it this way, and it worked ok.

 I suppose instead of using a die, you might put various colors in a bag, and let each child take turns reaching in to draw out a crayon.

The Activity Mom did a similar activity recently, but her version is a little more educational.  You can check it out here.