Nyt's post reminded me of a tool I overlooked.
Oscillating tool with attachments.
Cutting attachments for wood, plastic, lexan, even soft metal.
I use it to cut ply and clear fins.
Detail sanding attachment.
Scraper attachment.
Plus, dozens of uses for home improvement:
Cut wood molding and trim.
Cut PVC and copper pipe and gutters.
Plunge cut through dry wall to add access panels.
Undercut door jambs for laminate flooring and threshold installation.
For small and occasional jobs, replaces much larger and more expensive power tools.