Here's what I used: a shoebox with removable lid, x-acto knife and scissors, contact paper, packing tape, clear cellophane (off of some 12x12 scrapbook supply packaging), foam insulation board, white linen fabric scrap and hot glue, and quilting pins.
First I cut down the box to the depth I desired, and I cut the center out of the lid. I taped it up for strength and covered it with contact paper. I trimmed the cellophane to fit inside the cover and taped it around the edges to the inside of the cover.
Then I cut the foam board (left over from our house building project) to size and hot glued the fabric to it. Then I glued that in place and pinned our collection to it. I added twine to the back to hang it next to our shelf of other collected items.
When I went looking online for a simple tutorial for such a thing. I really could not find anything satisfying. And you know that they say... Necessity is the mother of invention!
How do you house your collections?