The above cupcake jars are made by Fat Daddy's Bake Shop, but it appears they are no longer selling these in their Etsy shop anymore.
There's nothing stopping you from making them yourself!
DIYBride's blog (she's so crafty!) posts a "tute" for how to make these little cuties:
These little dessert jars would be great to give as gifts for moms, bridesmaids, out-of-towners, etc. Wrap ribbon in your wedding colors around the lid, print a circular label for the top, and there you go!