3M Scotch DOUBLE-SIDED FOAM TAPE Permanent
Where I used to work there is a free table. All sorts of items get put on this table and about 5 years ago a glorious roll of this awesome double sided tape appeared. I snatched it up to use for my mobile vending business. I used it but sparingly. Then, I started papercrafting and learned what a precious gift that free roll of this tape meant. I don't bring it with me on crops. I use the EK Success round foam. But at home I keep chunks of this on a piece of acetate handy for larger projects. I think this roll is going to last me another 5 years. Its a great investment whether you pay for it or get it for free.
Happy stamping and/or camping!