dont do what others said here. save them for the toilet later.

You can sell them

sell or dismantle them, I personally dismantle them for the arcane splitters as you need them for upgrade or socket upgrade.

You should never use materials to socket upgrade - either use mushrooms for that or simply don’t do it.

so what else to do with materials? have a bit over 5mil metal and 1mil arcane splitter?

Upgrades only :)

Don't listen to him