Conductive material for no touch tools

[evermorian]

Previously:

Material to use for products that interact with touchscreens?

I’ve been asked to make a bunch of “clean keys” for my colleagues, if you haven’t seen them there are a bunch of designs on Thingiverse and elsewhere. Essentially it’s a key-like object that attaches to your keychain and allows you to open door handles and push buttons without using your hands. I’ve cut some prototypes out of 1/4" acrylic, but the complaint has been that they can’t interact with touchscreens. Is there a similar material I could use that would be functional with a touchscreen? Ma…