Button guard for portable espresso machine

Many of the unbranded portable espresso machines available on aliExpress, Amazon and eBay have a rubber button on the side that turns the machine (and the heating element) on. This button could be pressed accidentally if the machine is carried in a backpack. To protect myself from this happening, I designed a button guard. Simply glue it to the machine with double-sided adhesive tape. I used 20mm tape (3M-9495LE-20MM, available at dondo.de). If you want to be extra sure, print the matching lid, too.