You could make any shape, letter, or number. You could even frame it as art instead of putting a toothpick in it as a cake topper.
Use a large binder clip as a glue gun stand.
Hot Glue Snowflakes
How to make 3-dimensional lettering with a glue gun and household supplies. Brilliant!
DIY :: glue gun mason jars :: write on the jar using a glue gun, once dry spray paint in your choice of colour.