roadsigns/signs, upgrader version of runestone

[TheJohan]

yeah i would like to be able to build roadsign/signs with maybe some planks where i can write anything on, cause one day rocks are gonna disappear and you cannot plant rocks

[Xarx]

This has been suggested before.
It might interest you to know that you can make runestones out of boulders which you can get from mining out a cellar in a cabin.
So that means there is almost an unlimited amount of possible runestones.