Let Fade
It fades unless you come back to it.
Formerly Leak
Cross out the oldest, unless revisited.
Seen in Aki Maita (Bandai) and Akihiro Yokoi (WiZ), Tamagotchi, 1996–97 (M+ collection)
Try it on your work
Lay out every component of the thing you're working on. Every five minutes remove the one you have touched least recently, unless you have touched it since the last removal. Stop when what remains has not changed for three rounds. That set is what the work actually uses.
Start a list of the words your project depends on. Each day, strike the oldest word you have not spoken or written that day. Do not protect any word. Stop after ten days; the survivors are your working vocabulary, not your stated one.
List the tools, files and habits your process carries. Each week, archive the one least recently used, without deciding whether it matters. Stop when a week passes with nothing unused. Reinstating something is allowed only by using it.
How it has been used
A footpath through grass stays open exactly as long as people walk it. Computers manage their fastest memory the same way: whatever has not been used recently is quietly dropped, and what the present keeps asking for is what stays.
Where it leads
Grouped under Take something away