The ABRACADABRA bookmark aims to make finding where you left off and opening to that page easier. I didn’t know it was an issue but now I hate my ordinary paper bookmark. The ABRACADABRA contains an air-filled chamber, half of which is flattened by the weight of a book. Squeezing the exposed side inflates the concealed side lift the page just enough for your finger to slip in.
And just for fun and giggles, old ABRACADABRAS can be arranged on a paper pot. Yea, a paper tree, a paper pot, and graphics that look like something else.