What about a belt wearable? Or Bandolier? Tiered for different numbers of “sockets”/cost to make/rarity of mats.
Each socket can take a buff item.
Make sure there are more buff items than sockets to make people complement each other, or prioritize.
Similar to guild buffs but based on proximity to belt wearer.
health regen++
power++
revive heath++
Agility++
etc etc use ur imagination
Belt effect could have an aura graphic - all glowy sparkly
They could need a consumable “fuel”? Essence?
Could even be solo specific ones such as storage/fall armor/luck?
When I first glanced at this I thought it said “Socks” not Sockets.
But I like the idea of a belt with available upgrades. I know we have skill points but what about a socket for protection (all types) on all planets? It could be upgraded for each type and level.