Prevent repositional glue from sticking? I have a card box in which I have a card with repositionable glue on it - however the card gets stuck inside of the box, and is then fairly difficult to get out. 

I wondered if anyone knew if there was anything I could coat the inside of the box with to prevent the card from sticking inside of it - preferably something long lasting. I've tried a silicone spray, but that didn't do the trick.
One thing that might work to reduce but not prevent sticking is sticker backing paper (waxed/plasticised). Unfortunately it's rather obvious, and not easy to attach because it's designed not to stick to glue.

Another hard to attach (I suggest staples) material is reusable non-stick cooking liner.  It's normally brown similar to much packaging cardboard, but can sometimes be found in black.  This again won't completely prevent sticking, but will make removal much easier.

These won't damage the sticky layer on the card, while one thing that probably would is wiping a very thin layer of oil/cooking spray/silicone furniture polish over spray lacquer.  This approach has the advantage of being applied like a coating, but could end up messy as well as spoiling the glue