While I'm on the topic of tape and my admiration for 3M, let me mention something slick Michelle brought home. It's the Scotch Tape Runner -- a cross between double-sided tape and a glue stick. You pass the Tape Runner along the item to be taped down. It lays down an archival, photo safe double-sided tape adhesive. No glue blobs, no drying, no tape balls, and no fingerprinty double-sided tape. It's amazing and super easy to use.
Available at Amazon and fine stores near you.
Scotch Tape Runner-.33''X472'', Acid Free