ICE CREAM SUNDAE: A pushpin can be used as a base for an ice cream sundae. A dollop of Polyfilla makes good ice cream (can be tinted with a bit of acrylic paint if you want chocolate or strawberry ice cream). Add a bit more untinted for whipped cream, drizzle on some chocolate syrup (acrylic paint or glass stain) and add a cherry (no hole bead) to the top.
To remove the pin, heat it with a match or lighter and pull out with pliers.
Using a single edge razor blade, slice a wine cork. You can also use the blade to cut a slice from the cake.