Lots of stuff all the time, like everybody else, gloves, bungees, tools. Once there were hundreds of zipties, I gathered up a few handfuls and still have a large stock. I've found a couple smashed phones, but a few weeks ago I found an iPod in the gutter of a residential street, working, on, playing Fleetwood Mac, and having no password. I was able to get into the settings and find a gmail address and make contact and return it.
This Tuesday was a good day, on the same ride I found a "
locking C-clamp", a Snap-On hinged 8mm socket, and a roll of white electrical tape.