One cool product which has proven to be extremely versatile is the Rainbow Orb Ball. 

We get customers who buy this frosty little ball for raving around in their hands to customers who buy them for wedding decorations!  The ball has one button on the bottom which is used to control all the functions:

It’s so versatile because the Orb Ball can stay lit in 7 different solid colors, and then it also has a Color-Swirl mode where it rotates through all the colors.

Checkout more information about this best-seller here.