How would people react to a donations -> vr mods gig?

I'd say setting up a website for your mods/hacks and putting up a donation button would be a fine idea. You could also potentially package a bunch of hacks together and put it up on Kickstarter. Make a poll for the top 10 games people want to play with their Rift, then get funding for it, with stretch goals for any games that didn't make the cut. You won't necessarily get the same level of support of funding you would if you were planning on releasing a really high quality new VR game, but there definitely is an interest in making existing titles work in VR, so I think you could find an audience.