The Idea is simple: Water cells/Lava cells/Fuel cells (won't work properly with ura because of radioactive decay) give you Used Cells when they should have normally be "destroyed" in the GeoGen or Watemill.
It's not a way to re-use cells!
But you could put your Used Cells in a Recycler and it would have a randomized chance of giving you tin! (max 1 per 4 Cells, of course)
Could be done with all the Single-usage-stuff (For example, single Usage Battery, wich could give you Copper cable or others if you find it)
