What to do with a pile of decommissioned RPi

Got a bunch of RPi gear from work lab, some still unopened, ranging all the way from RPi Zero/2/3/4/5. I already have my MS-01 with PROXMOX running most of the small services you might typically run on RPi like Home Assistant, AdGuard Home, NGINX PM, etc. Any suggestions for what I should do with these?? Some sort of cluster/rig/gaming?

Got a bunch of RPi gear from work lab, some still unopened, ranging all the way from RPi Zero/2/3/4/5. I already have my MS-01 with PROXMOX running most of the small services you might typically run on RPi like Home Assistant, AdGuard Home, NGINX PM, etc. Any suggestions for what I should do with these?? Some sort of cluster/rig/gaming?