Random things found in my pockets

I am wearing the same jeans I wore the other day when we were at the park. I noticed something in my back pocket.

I’m pretty sure I didn’t collect and save these, so here is the question: who put these in my pocket? Also, (perhaps more important) how did I not notice?

I

…just realized that I totally should have tried to work in a cleverly veiled Gollum/Bilbo reference. That would have good. Really, I would love to find an invisibility ring in my pocket – would totally come in handy on those days when I just want to sit quietly and read my book. for now, I just have a mini handful of pebbles. Perhaps I should investigate alchemy. It’s not difficult to learn, right?