https://en.wikipedia.org/wiki/Blu_Tack
beats them all. I have about $100 of fancy tape that I'll probably never use left over.
It leaves a residue, can be hard to remove, and sometimes impossible to remove without ripping the poster!
It doesn't seem to age well either, and it's not particularly high in grip strength!
But it has its uses!
My kids ones mixes Blu Tack with Plasticine, and it makes a disgusting sticky goo!
Of course the prints were ruined, but who cared? I would never use it on anything important.
I use it to stick pictures, kids' drawings, postcards and random stuff to a cork board on my wall and to doors, and it worked flawlessly for years.
The only problem: my kids steal it to play with it.
These days my main side project is a frameless ‘decoration system’ motivated by that experience (and others) but you do have to be more careful in your materials choices if you don’t want in framed prints to fade quickly.
0: https://www.quakehold.com/product/quakehold-museum-putty/