I don't know yet how to make it convenient in VR. My current thinking leads to me have "store of nice seeds" where you can store whatever you like and want to share. And also put things from friends there to check them in game. Access to that would be from VR with just "start"/"store" and outside VR there you would have a table with values to copy, etc.
One thing that might be problematic is that everyone may have different playarea. Currently I round up playarea size a bit to make it more probable that people will share same size. But if you have 2x2 and your friend has 3x3, they may check your seed but if you try their seed out, you may end up hitting a wall.