I made this tube container a while back. It's perfect for holding A4-sized paper vouchers (or letter-sized too), making it a great gift idea. You can also hide a treasure map ;)

The tube is made up of two parts that screw together, making it super easy to use. Just remember, when printing, pay special attention to the placement of the seam. Slicers can't always place it optimally, so you may need to paint over it to hide its location. Check out my screenshot for an example, or just use the 3mf file I added for your convenience.

Print Settings:
Material: PLA
Layer Height: 0.2
Infill: 15%
Walls: 2 or 3
Supports: No
Change filament during print: If you wish
Pause during print: No
Brim: Maybe for the taller model.
Raft: No

I hope you have fun with this model! If you have any questions or suggestions, hit me up in the comments. And if you wanna support me, give it a like, download it, and share it with your friends. Happy printing!