This is just a random icon generator. It uses FontAwesome icons and randomly pulls 10 of the icons within their "free" tier. The idea from this came from the video Easy Ways to be your own GM (solo RPGing) where Youtube user "Geek Gamers" suggested using a set of dice with pictures on them to help suggest ideas. I figured, we could do some fun stuff like this but using a source that had more icons than what is limited to dice. Refreshing the browser will randomly generate more icons.
If your world is low tech but you keep getting icons for modern items, think about what the low tech version of those would be. A motorcycle could easily be a horse instead.