For the last few Christmas' I've tried to make my gifts for family and friends. This year I made laser cut tealight holders. I went through several iterations before settling on the snowflake design. I originally tried to make the screen as one piece with living hinges so I could flat pack it and recipients would have to assemble the piece. It proved a bit challenging to assemble so I went easy on myself (and my friends!) and pre-assembled the lights. This way I could ship the little battery powered light with the fixture. Everyone really loved them and they were pretty easy to make.
I used 3mm birch plywood for the lanterns.
After making the first one, I decided it needed a diffuser to bring out the design. I settled on vellum tracing paper I happened to have. For the snowflake light, cut a piece 3"x8.25" and add creases equidistant along the long side (I believe they ended up being 1.625"). The paper diffuser then can just be inserted into the holder and it will form to the sides holding it place, as long as you don't over crease the edges.
For the other light, I individually cut each paper panel and glued it in place quickly realizing the one piece folding idea was much better, considering I was making many units. I don't have the sheet size for this one, though it should be easy to measure and make your own.
To assemble the light, begin by gluing the panels one at a time to the top. They overlap each other by one thickness (see the image of all the panels attached to top only). It's much easier to assemble the unit by attaching the panels to the top first. It can only be assembled one way, the top has two tenons, the bottom only one. You don't need to glue the sides to each other, once it is assembled, it is surprisingly robust.
I found the battery operated tealights at JoAnns, though I'm sure any craft store has them. If you make one, post a picture, I'd love to see them. Also, feel free to create your own patterns for the lights....be sure to share those as well!