This is a design I've been working on to open doors and push buttons without touching them, optimized for printing multiples at a time- around 24-28 at a time with a 300x300 print volume. It's small, simple, and fits nicely on a key ring.

Due to the shortage of antimicrobial copper filament, I've been treating my prints with an antimicrobial clear coat, which is linked below. Please note that this treatment is waterborne, so an airbrush or spray gun is necessary for proper dispersion.

PhotoActivaTB Antimicrobial Clear Coat: shorturl.at/cfnL1