I just got a job doing 3rd shift grocery stocking, usually they don't allow earbuds but there's no customers so everyone does it anyway.
I'd like to get something ~$30 or less (I don't really care about the sound quality so much as long as it doesn't sound terrible), and battery life lasting at least 8 hours. Wireless because I don't want the wire getting in the way of anything or feeling weird down my shirt.
A few years ago when my job was more physically demanding this was most definitely the way to go. I would lose and break a few pair every year.
I got excited when I figured out its now safer for me to wear a nice set. I still worry about losing an expensive set of buds , pretty much all day I wear them.