Best cordless handheld vacuums for cars and boats

Top pick: HOTO AutoCare Air Duster & Vacuum. It's the one built for exactly this job — strong suction with a blower side that pushes crumbs and sand out of seat rails, cup holders and boat floor seams, and it's light enough to hold overhead in a cabin. Three power levels let you run gentle on upholstery and boost on grit.

Who the others suit:

• HOTO BlowVac — more raw suction and a faster blower; pick it if you mostly fight dry sand and debris rather than fine dust.
• BLACK+DECKER dustbuster AdvancedClean — the familiar crevice-tool-and-bin setup, good for routine car tidy-ups.
• Black+Decker Dustbuster HHVI320JR02 — bigger bin, so fewer empties on a long boat day.
• Juyafio — long run time if you want to clean the whole boat in one go.
• Shark and the small 3.6V dustbusters — light, occasional touch-ups only; short run times make them a poor fit for a full interior.