Spent 6 months with the kids kicking my booster down the stairs when they came downstairs, finally decided to sort the issue.

It utilises a 3mm back plate sandwiched between the plug accessory and the socket.

It allows venting too from underneath to help keep the booster cooler than stock.

I did notice that certain plug sockets are different measurements between the centre pins so please measure yours before committing to a print.

Mine are 84mm between the middle of the earth pins, pictured above, and 32mm from the top of the earth pin to the top edge of the socket.

I printed the shelf vertically and it came out really well, the plug plates came out well but in hindsight I would have printed them on their side to increase their structural integrity.