The M11 rare earth magnets work great with the metal stampings (even stampings that are concave). They allow you to change stampings on a project depending on the season. Also great for the refrigerator and around the workshop.
This STRONG double sided tape is useful to attach metal stampings to a variety of materials. Tape is also ideal for poster board craft or school projects. In working with my Son on his school assignments, this tape holds things that other double sided tape failed at. Sold by the foot.