New ask Hacker News story: Ask HN: Cheap gadgets that have made you more productive?

Ask HN: Cheap gadgets that have made you more productive?
3 by elkos | 1 comments on Hacker News.
I recently got a pear of dead cheap Edifier W800BT headphones as a spare. I wouldn't expect that they would be so useful I think I missed out I didn't had Bluetooth headphones for a while. Are there any other cheap gadgets that you people would suggest to someone on a budget (like 100$)?