Have you seen my keys?

If it's any consolation, OP, I've managed to lose a perfectly good (and fairly expensive) pair of wet legs that I'd recently invested in - they normally live in my bike pannier along with the helmet and other cycling stuff, but recently I went looking for them, and there they were, gone.

I've also, even more mysteriously, managed to lose an entire (fairly large) emergency boot bag from my car, containing emergency triangle, hi viz jacket, gloves and all that other stuff that you collect. I've had it for years, and distinctly remember wondering would it fit into the miniscule boot of my new car when I got it last year - it did, much to my delight. But I obviously moved it out to fit other stuff in at some point, and recently copped that I haven't seen it in about a year or so.

I've searched high and low for both, and no sign.

Keys you can lose down the back of a sofa, or in a jacket pocket - that's easy. But two large items like that, in a small house/car with only me in them?