Made to order for my favorite wife.
o It must not jam when when filling.
o It must to sit nicely in the top of the spice bottle, so I don't have to hold it.
o It must not go any lower than the threads at the top of the bottle.
o It must be small for easy storage.
o The inside must be slick so powered spices fall easily.
It might be right for your favorite wife.
Print one and see.
At 5% fill, in pla, it taks about 3 meters of filament.
If your favorite wife, becomes your happy favorite wife, please leave a picture of her and her spice funnel in the I Made One section
If you need a different size to ensure her happiness, leave me a comment.
An acitone vapor bath for the inside of the funnel should make it slippier.
My favorite wife was kind enough to bring one of her spice bottles into my printing area, so it could be properly measured. About 30 lines of OpenScad did the trick.