Rug suggestions that won't break my wallet.

I live in a super cute vintage building that has it's original wood floors and has you can image there are spots of extra wear-n-tear that frequently gift me splinters. I have a rug that I'll be moving to my office area and am looking for a rug(s) to cover a space that is approx 15x10). I've looked at ikea/overstock/wayfair but didn't see any I thought would be a good fit. The style of my place is chaotic nerd with green and black being the main colors. Thank you in advance for your suggestions.