I had a lot of fun pressing these plants. I tried making my own plant press and I am glad it managed to work, but I think I would be willing to spend the money on something that I could use more than once. (My plant press was not as effectively constructed as I had thought it was going to be)
Fantastic job on these. Here is a quick DIY plant press video. Either plywood, or a lattice of pieces of wood would work well for the top and bottom instead of the books, and compression straps (Home Depot, etc.) might be used instead the bicycle inner tube. https://www.youtube.com/watch?v=_IJZAalKfL4. If you want to spend some money you can also purchase one here https://www.forestry-suppliers.com/c/plant-presses/9-83-468