Couldn't find this model anywhere, so I took Eletric Squid's model and just made it not big. The proportions are still a bit different from the original lever, but it should be a bit more confortable for people with larger hands.

I recommend printing with all walls or with infill set to 100%. Maybe inserting a metal rod in the weak section, so it lasts longer.

-/-

Update: Printed two using Voolt PETG and both broke with normal use (no flipping nor priming one handed). The latter was printed using 100% walls, 40mm/s, 245°C and no cooling.

The third one I printed on PLA and it has been holding on nicely for a few weeks. Printed with prusament PLA .20mm quality preset for the prusa mini, only modified it to have all walls and support on the buildplate.