This is a complete rebuild of the @Tailorglad funnel tray from the ground up adding the ability of customizing it here on Makerworld.  

I like his idea of being within the Gridfinity cell area so it can stack cleanly.

I did this for multiple reasons

• I wanted different sizes than I was seeing already posted, taller particularly.
• As an exercise in Fusion 360, to grow my skills.
  • Merely modifying the origin design became problematic as it seems to have been based on a Gridfinity generator base.
  • Allowed me to build Gridfinity without starting from a generator's output.
• I wanted to see what it takes to use the customize feature here on Makerworld.

I have set some limits on size, nothing too restrictive, X&Y Gridfinity units are limited to 1-9, Z is limited to 1-50, with the Z value being above the base plate, that is Z=1 would build a tray that overall is 18.15mm tall (7mm base plate + 7mm walls + 4.4mm stacking lip - 0.25mm trim of the top)   ,