A small mount plate to move the power switch of the Ender3v2 to the front right, next to the control panel. Re-uses the original switch, only ~50cm two-core cable is needed, plus 4 connectors. Cable is routed along the display cable, then through the lower furrow of the 4040 beam (this is why the thing is erased box-style, so the cable can easily pass in). The core opening of the 4040 rail is exactly right size for the switch :)

A more concise description has been requested - I'll try my best. + disconnect the power cord + open the cover of the power supply (from the bottom side) + disconnect the two plugs from the power switch + crimp two male plugs (left in 4th image) on a two-cord cable safe for mains power + connect those to the two female plugs you just disconnected from the PS + route the cable towards the main board, from there along the display flat cable + when at the right 4040 beam, route the cable through the closer of the furrows towards the front + remove the original beam end cover. the cable should go through the gap above the rubber foot + crimp two isolated plugs to the cable + remove the original power switch from its place (squeeze the clamps from the inside) + insert the switch in the printed thing. Close the original opening with the linked blind plate + attach the plugs to the switch and attach the plate to the beam