Glue that sticks to glass?

Double sided tape perhaps.

Could you cut up a small amount of Command Hook type adhesive pad? Your Glass wave is gorgeous by the way and would also look beautiful with the sun streaming through if you have the right facing sort of window!

I've used Nano tape (gel) to stick things to glass. Very strong and left no residues. In fact it's so strong that it takes quite a tug to remove so may not be suitable if your wave is very delicate. The tape is quite expensive but is very useful for sticking all sorts of things.
The wave is lovely and adding little lights is a great idea... good luck!

I’m intrigued - how did you make the ‘glass wave”? Did you ‘blow’ it ?

I'd also like to know how you made this incredible glass wave .

crazyH I did a workshop at a place near Towcester. They proved lots of off cuts of glass and you use a cutter to cut them to the size you need and put them on a stencil. You then add a powder (can't remember what it's called). It's added to the glass to create different colours. It's then fired and you go back a week or two later and pick it up. They also give you the lovely wooden stand to display it. It was so satisfying to create something a little bit unusual.
Everyone, thank you for your lovely comments. I'll certainly try your suggestions

Thank you , Mumski .

Mumski your wave is beautiful. Rather than glue lights to it. You could get a bar up lighter and put flat on the table top behind the wooden base. Gluing anything on to it may damage all your hard work .

I did something like your description mumski and it was called fused glass. Is that what your workshop was? It is lovely.

I saw something today in a garden centre called nano gel tape.