What basic gear is a 'must have' for cyclists?

I tried Scabs about 10 or so years ago and they failed miserably back then; about 6 months ago I tried Lezyne Smart patches and they too failed miserably; years ago I tried Specialized Fat Boy glueless patches and they worked as good as the Parks but they stopped selling them after about 4 or so years of marketing them. I haven't tried the new Topeak Rescue glueless patches, I've heard they're really good, so the next time I get patches I'll order those and give them a whirl.