Replacing EKET knobs

[u/PocoChanel]

I have several EKET box-style shelves with glass doors. These doors have very tiny knobs (if you cavern call them that: the door-pulls); it’s hard to get ahold of them, especially when they’re in the bathroom (as mine are) and your hands are damp.

I’d like to find something with a larger head. Not huge, mind you, just a little wider. Has anyone done this?

If I wanted to get crafty and attach a piece of sea glass to a knob, what would be the best adhesive?