When DD had her 6th birthday party we did spooky cake pops. I used florist foam which I turned into a graveyard setting.

For a baby shower yu could do a pot plant or a gift box filled with styrafoam and tissue paper. I've seen people use glass vases with stones. You could cut foam to make it look like a cake and cover with wrapping paper and then poke the cake pops all over... You could even make a foam cake and cover with fondant to get fancy.