I work across multiple machines with different pointing devices (regular mouse, vertical mouse, touchpad), and have no issues double clicking to select a word. Dragging from the start of a word to the end can sometimes take multiple tries. I may miss the first letter. I may drag too far. The vertical mouse isn't great at holding a selection. It's not a huge deal, but it's an annoyance that I don't run into working with Stripe IDs.
I actually built something similar using React/Redux, but I've been moving away in favor of plain old Javascript. Usually I'm working out at home and using my laptop, but if I'm out at a friend's house, I'm using an old iPad. There was a noticeable lag, doing certain things on the React/Redux stack, that disappeared when switching to plain JS.
How about when iTunes randomly starts moving music off your local drive and onto the cloud. This has happened to me for songs not purchased through iTunes, and without me knowingly enabling this "feature".
There was a dirty mouse program that would get installed anytime someone had their computer unlocked. Every few minutes you'd hear someone get pissed off and banging their mouse on the desk.
Another one we did was take a screenshot of a 404 page, and then randomly show that instead of the site that they were working on, but only for their IP.
A quick and easy one was to just crank someone's speakers all the way up, for the next time they play music.
