Introducing the Gridfinity Scapple and Blade Bin, I purchased mine from Hobbycraft (https://www.hobbycraft.co.uk/modelcraft-soft-grip-craft-knife-set-7-pieces/6124321000.html). I have created this one myself with a hole for 2mm x 6mm magnets to hold the blades in the tray.

Included are the following files: .F3D for Fusion 360, .3MF, .STEP, and .STL. 

Feel free to customize the design and share your creations on the community sharing page. By collaborating, we can learn from each other and enhance the design together.
If you encounter any issues or if the design doesn't meet your expectations, please let me know on the sharing page. I'll do my best to address any concerns. Additionally, I would appreciate it if you could like the design, save it to your collections, and share it. Your feedback, both positive and constructive, is invaluable in aiding my development efforts to create these items for myself.

I'd love to see a photo of your creation, as I'm curious to see how it turned out for you. Thank you for your interest and feedback!

Print Settings:
Standard Quality
Nozzle: 0.2mm
3 walls
4 top/bottom layers
15% Cubic infill
Material: eSun PLA+
Colour: Black
Amount: 26g
Time to Print: 3Hrs 57 Mins