There literally is so much you can do with them. You could make shapes like the heart I made here. You could wrap lines over the lens area, forming an effect similar to the popular shutter glasses. It's up to you really! I personally like these and will definitely be making more so that I can accompany them with my summer outfits.
Also, if you haven't noticed yet, I wasn't just modelling my glasses in these photos. I was modelling my necklaces too! I personally like having things that are one-of-a-kind. I like turning anything into an accessory, and I prefer making my own rather than purchasing accessories that everybody else has! I call them "anything necklaces".