As I refurnish and clean commodore gear quite often here's where I usually start separating items.
C64/128 gear - top case, keyboard, bottom case, motherboard, power supply, mouse.
Amiga gear - keyboard, case, motherboard, cards, mouse, external power supply.
Windex or Glass-Plus for general cleaning, or wipe down. Awesome Orange degreaser and Scrub-It Quick Eraser clean up fouled keyboards, cases, and any exterior items. Finish with bottle sprayer filled with 91% Isopropyl Alcohol. I use a 35PSI air compressor (with nozzle tip) to blow away excess. Hang or suppend items to air-dry.
For the boards I use an spray electronic contact cleaner on the boards. For battery issues the area is cleaned with a chemical battery cleaner, and finished up as above. Seal battery area with clear finger nail polish.
Additonal tools: welder flux brushes and small nylon paint brushes to scrub air vents in top case covers (64/128). Q-tips or similiar on keyboards, mouse, etc.
