Add essentially a wooden pallet(In ancient times they were referred to as skids), built with planks, that can allow a stockpile to be placed on top, which can then be lifted and transported. Essentially letting you lift a stockpile to hearth home, or more around prior to obtaining leather. I imagine lifting a pile of logs or stone would be difficult, so probably force crawling speed to walk around with it to keep it from being too useful. Could possibly be stored in a wagon, or snekkja/knarr, whose size physically make sense though that may be too OP. Really would only be super useful in early game, but I imagine it will have its uses in the late game as well. Let's say you're out hunting and you find a particular type of tree or stone you want but didn't bring a wheelbarrow just quickly make a skid, place the stockpile, and bring it home. Couldn't possibly replace the wheelbarrow, but could be very helpful in early base building.
https://en.wikipedia.org/wiki/Pallet#cite_note-24