I dun rly do much of anything except sit at home all day every day and read wiki pages, but i guess the biggest recent disappointment would be when tried to replace my headphone cord.
I managed to break my headphone cord in half, presumably by running over it 314 times with my computer chair, and it was a proprietary one for headphones that are not made anymore... i bought a 3,5 to 2,5mm adapter that i assumed would make the new, normal audio cord go in the tiny weird plug in my hphones but nooo, it was too big, and i broke it trying to make it fit, i then found a smaller adapter online that looked like it could fit inside the hole of the plastic frame, and when i got it in the mail a couple days later, i pleasantly discovered that it was the same exact adapter i bought the first time.
They sent me the wrong damn adapter