When my teen was younger this was her Valentine's box for years.
Harry Potter Monster Book of Monsters Valentines Box!
It's seriously too easy.
We got an old cereal box and cut the front three edges so it opened like the monster book.
Hot glued fun fur over the outer walls. We did just one piece from top to bottom.
Cut a tongue and teeth from felt and hot glue on.
Hot glue google eyes.
For the "paper edges" for the book, I measured the box edges and cut cardstock to fit.
I used a ruler and pen and just did as many straight lines as I could fit, to show the pages.
Hot glued on the cereal box sides.
Made a little tag that said whose Valentine's Box it was and glued it to the spine.
Just being a cereal box it lasted quite a while with girl taking so good care of it!
care of magical creatures!