I was looking for a bottle holder that would also serve as an airtag holder, but I could not find something that was not immediately obvious, since the purpose of the airtag is to remain hidden for as long as possible.

The airtag is also removable only by unscrewing the bottle holder from the bike, so that will also make it last longer.

This is the first version that is tested working on my bike, I will probably refine this later, since this was done in a pinch.

If the holes do not align with your holes on the bike, comment or dm me with the measurements and i will implement them in V2.