Hey! So I found this great plugin, compatible with 1.16 AND 1.17, and is stable with spigot/paper.
https://www.spigotmc.org/resources/blockshuffle-1-13-x-1-17-x-minigame.81598/ is the link to the plugin.
It is a game where players get a block they need to stand on. There is a customizable amount of time, and a timer above the hotbar, to find or craft that block, and stand on it. Unlimited amount of players can play.
Even though another block shuffle plugins exists (https://www.spigotmc.org/resources/block-shuffle-minigame.85296/),
this one has a lot of missing features to the one I am suggesting, like the timer on the hotbar, and much more customization.
Thanks for considering,
Quuy.
(My Minecraft IGN)