Quantity   Component name
1 × Clear PETG Filament (1.75mm) Each digit is made from a short length of filament.
10 × SMD LEDs (color of your choice) choose a color that you like to see in the 'tube'
1 × PCB, stripboard or just a piece of cardboard is good enough The LEDs can be mounted (glued) onto the base material. or soldered to a PCB.
1 × Sandpaper 100 grit
1 × 3D printed base Will be on thingiverse