ok so this is another long shot but a few years ago there was a twitter post (in japanese i think?) that had measurememts for how to make this book stand thing out of cardboard that you could use to double up books and use up more space on shelves

image
image

back then i made a bunch of these but by now i lost the pic and dont know how to find the original post anymore

if it comes down to it i can just take one apart and get the measurements from there but i would be very grateful if anyone happens to have the original post or something similar??

don't mind how long it's been since i made this post, anyway i realized that i don't even need to take one apart to get the measurements when i can literally just unfold it and refold it /FACEPALM

so anyway here is the diagram for anyone else who is interested!!

image
image
image

this requires pretty big carboard pieces, if you have a really big box or something you can make it from one piece, but if you don't, you can also just make each of the pieces individually and then tape them together

image
image

and then in the end you put it together like this!!

image

and then when you make a bunch you can put them all next to each other and stack your books like crazy

image

EVERYONE START GETTING MORE USE OUT OF YOUR SPACE NOW!!!!