Also worth noting with the float test is that some accessories when placed in water will at first float... then will sink when pressure is applied like tapping your finger against it or submerging. The Yoda cane and Yoda brown snake come to mind.
As AJ said there is still lots of updates to be done on the site. Hopefully we can add further info over time for all accessories re floating/sinking
thevintagetoyadvertiser.org 1970s and 80s vintage toy ads and other retro paperworks
imperialgunnery.com Vintage Star Wars action figure weapons and accessories guide