I needed a stand for my hygrometers to keep my filaments dry. I had tried others, but they didn't fit in the boxes I had. So I made one myself, which fits well.
For this, I used the cereal boxes: https://www.amazon.com.be/-/nl/gp/product/B0BL3CXNHZ/ref=ox_sc_rp_title_rp_1?smid=&pf_rd_p=fe368e60-acff-4839-bd79-50fad4fe4d4e&pf_rd_r=E6MTP9WQ77EE3RPDNV2X&pd_rd_wg=2G1iu&pd_rd_i=B0BL3CXNHZ&pd_rd_w=HVTf1&content-id=amzn1.sym.fe368e60-acff-4839-bd79-50fad4fe4d4e&pd_rd_r=3274cb54-fbc0-4ee0-ba66-7d8759efe0d3&th=1  from Amazon.

I used pla to print this and it worked very well.

I hope this also works with others, please let me know.