I actually don't own any repositionable adhesive so I can't make a recommendation. I have never heard of one that would allow you to put the item back in your stash, but that doesn't mean there isn't one! I've never looked
If you can't find one, maybe you can get a piece of cloth that doesn't have a lot of lint and "store" the item on that until you are ready to use it again. You can just cut the cloth to fit the item. When you are ready to use it, you can just put on more adhesive. I don't know, just an idea. Hope you find what you are looking for!