Filament Funnel for frustration-free feeding

I have a medical condition that gives me poor eyesight and poor digital dexterity, so I found it extremely frustrating to try to guide filament into the tiny hole in the filament tubes, especially when the filament and the tube were the same color, so I made this little funnel. Slip it on the end of the filament tube and you can easily insert your filament into the other end and it'll be guided into the hole.

** UPDATE ** Tweaked the design some for a better fit. This was designed to fit the