A 48-hour OSRS bingo board sized for a weekend clan event. 25 tiles a working adult can clear in two evenings. Free board plus the full tile pool.
A weekend is the length most clan bingos should be, and almost none are. Two evenings and two mornings is roughly eight to twelve hours of play for a member with a job, and a board built for forty hours just tells those members not to bother.
Every tile here is sized against that budget. Nothing on this board needs a second day of grinding on its own, and the hard tiles are hard because they are rare rolls, not because they are 2m XP.
Start Friday evening and end Sunday night, in one stated timezone. Half the disputes in a weekend event come from "midnight" meaning two different things.
Announce the board the Monday before, not on the night. Members plan their weekend around it, and participation roughly doubles.
Keep the tile count at 25. A 7x7 board over a weekend is a board where no team completes a line.
The board above is drawn from this pool. Swap any tile for another at the same difficulty and the points stay balanced.
For most clans, a weekend. Two to three days keeps the whole clan engaged; a week starts strong and loses attendance by Wednesday unless the board is big enough to need it.
Twenty-five, as a 5x5 board. Fewer and the event is over on Saturday; more and the board is still half open when it ends.
This board is free to copy, edit and post. Tracking 25 tiles across a clan - submissions, screenshot approval, team standings, Discord updates - is the part that eats a host's weekend. An OSRSHub server does that for $12.10/month.