I ussed to have an electical adapter that I could wire in up to 4 appliances. It had its own 13amp fuse and was like one big plug the size of some circuit breakers. inside it at each pin were 4 holes to connect to. and the wires from each appliance had its own groove to sit snuggly in . saved having...
I used textured spray paint after I painted a water based glue onto my cupboard doors. Purchased in all good diy stores. Or you could use a matt finish varnish to seal your paint and so hopefully prevent chipping.... without a gloss finish.