Well, you can always do the pyrat quest. You get 1k Gralats a day.
There's also farming which consists of you slashing grass/bushes to pick up gralats.
As well as looting, that seems to be pretty popular atm.
There's also bug catching.
Hope I could help. Personally I would recommend doing the Pyrat Quest and farming, but that's up to you. Secondly I would recommend Bug Catching because it can be fun as well.