This one is made from an old D cell Mag-light.
The cut end was sealed with a JB-Weld stick about 3/16“ in from the edge (knurled end).
Then a layer of black silicone was applied on top of that finsihed flush to the edge.
The flashlight was a (3) - battery length light with plenty of tube length to cut off the switch and have enough left over.

Homemade Document Tube 1)

You can put copies of your registration in a plastic bag inside this box that also holds the tag on.
The box will also hold small objects like a spark plug gapper or whatever you want to put in it.
It also has a keyed lock.

Tag and Document Holder 2)	Grifter Storage Box 3)