Sharing this because I found it very useful. These shop vac extractor attachments are $15 on Amazon and are so much more powerful than my bissel. Comparatively my wet/dry vac was $25
ALL PARTS ETC. 2 1/2" Accessories for Shop Vac Attachments 2.5 Wet Dry Vacuum Extension
CRAFTSMAN CMXZVBE38725 1-7/8 in. Dusting Brush Wet/Dry Vac Attachment for Shop | eBay
WORKSHOP Wet/Dry Vacs Vacuum Accessories WS25030A Carpet and Hard Floor Nozzle Shop Vacuum Attachment for Wet/Dry Shop Vacuums : Amazon.co.uk: Home & Kitchen
Shop Vac Car Detailing Attachments Long Flexible Crevice Cleaning Tool Automotive Upholstery Wands Vehicle Vacuum Cleaner Works With Wet Dry Vac or Regular Vacuum Accessories Universal 1 1/4 and 2 1/2 :