Melt different colors of candle wax. You can do it au bain marie...
... or by holding the wax in a alluminium waxine holder above a candle. It's quicker.
Put a piece of baking paper on a flat surface. Put cookie cutters on it and carefully pour the melted wax in the cutters. If you're using a large size, pour a little layer and add a second layer when the first one is dry.
Let the wax cool down and gently push it out of the cutter.
Now all you need to do is think of something to do with them. I think I'll make a wreath.