I needed something to count how often I feel bored / overcome myself / read unread emails / whatever, so I made a counter out of an Arduboy. It is particularly useful if you, like me, find that just acknowledging “I feel like I want to go on Reddit” reduces the desire to go on Reddit.
Arduboy is a very light, credit-card-sized thingy with a screen and some buttons. It is Arduino-compatible and people usually use it for games. It costs $39 and looks like this:
This “app” lets me have several counters (persisted after reboot) and a timer (see Yoda timers). You can get it from here: