When I started woodworking, a key motivator was simply financial - make stuff myself and save cash.
There's nothing complex about this build. Simple pallet wood - all from the same pallet to keep consistent appearance, and avoid the need to process the wood too much (planing, thicknessing etc)
A simple grid of five slats with gaps in between and two perpendicular underneath, all 40cm in length. Each overlap with two screws - the only 'gotcha' being to be mindful of the screw placement on the end ones, given that it'll be cut into a circle.
Then simply cut into a circle with a jigsaw, and a quick sand to remove sharp edges.
Four wheels from an old office chair were attached - these are simply push-fit into a drilled hole.
That's all it took - literal junk (pallet wood, wheels scavenged from a binned chair, and even the screws were from the 'miscellaneous' jar). Whole thing took less than a couple hours and saved about thirty quid.
