I got 2 wood pallets, cut them in half, so out of each pallet I had a narrow pallet with the 6 blocks of wood (spacers?) underneath. tacked a flat piece of wood on top of one, that goes on the top, the other underneath for extra height. A ring fastened to the wall holds them OK. Cheap plastic 'step/stool' to sit on.
I lean the top one against the wall outside to wash it down.
To stop the occasional (?) foot in bucket, I plaited a bale band 'rope', double stranded, 2 lengths long, loop it round a back leg, under the back of the pallet and put my foot on it while milking, she can't bring her foot too far forward but I can take my foot off quickly if needed.
Mind you, while this works, I sometimes dream of a milking stand, as one girl tries to bite me while milking, she now gets fed AFTER milking, she's learned to let me get on with it