Generally a good way to give pixels is to use a pixel compressor to make voxels. However, that is generally for larger sums. For smaller sums, it's possible to use smaller materials for it, given that said ore can be broken down into actual pixels. Diamond, for instance, can be broken down into 500 pixels per diamond, if I recall correctly. However, if it is very minute amounts of pixels, just RP giving it over. Something like 10 pixels is so easily obtainable that most people don't care if they get something physically. Another option is to actually just trade in goods of equal value or otherwise. A fair number of players employ this method.
Lot's of people on the server don't bother with actually handing over and using physical IG items, pixels included. Some do, but most just.. role play it. **sifts through their wallet and hands over a 5x pixel chit to pay for their drink** and yada yada Usually when someone throws me a physical IG item its straight to the trash with that. Gross.
Ive also started to see straight up pixel wiring, like from a bank. *Player A wires x pixels to Player B's account* That seems to also work in the ways of "pixel transfer". Also, I sometimes keep voxels around just fro a physical interpretation of my players wealth, even i fi dont use them