Brush a small amount of corn syrup on the top of a gold or red-foil peanut butter cup (don't unwrap). Place an inverted (top side down) green-foil peanut butter cup on top of the first one. The bottom peanut butter cup is the pot/planter and the top peanut butter cup is the bottom/base the tree.
Brush some corn syrup on top of the tree base. Top with a green-foil hershey kiss.
Brush corn syrup on the tree and sprinkle non-pareils over the tree.
You could use a spray glue or hot glue instead of corn syrup, but I use corn syrup just in case it gets into someone's mouth when the tree is unwrapped and eaten.