I'm a dummy and stripped the bolt on my stock mirror. I had to take the mirrors off to load the bike in a moving truck, and today when I was trying to put them back on and position them to be slightly useful I stripped the bolt. What are my options now? I'd like to mount something similar to the OEM parts, but maybe not as tall/bulky. I want something that is going to be easy to install.. Ideally just screwing in to the OEM mirror housing. I'm not a huge fan of bar ends, and I don't want to do anything that requires I disassemble the front brake or throttle. Anybody have any options I could try?

Mate, you're lucky you didn't strip the internal thread in the housing - that's more common than stripping the thread on the mirror.

Any bike mirror will fit as a replacement, it's down to your taste and budget. There's loads of threads on here showing what people have done. There's no right answer, it's all subjective.