K
Kaleidacolor Ink - Raised dye ink that comes in a pad of color variations by Tsukineko. This works well on glossy paper.
Kromecoat - glossy card stock
L
Layering - adding and layering card stock to create frames on the card
M
Magnetic Mat - usually a work mat with a grid and magnetic bars. Use magnets to hold down work to keep from slipping and sliding.
Mail Art - decorating mail with stamped or original art, even collage.
Masking - stamping an image then putting the image of the image on top then stamping something else that makes an image in front of or behind the second stamped image. Masking is used in scene building. Post-It Notes are good to make masks for small images.
Master Sheet - usually an original collage that is saved and digitally recreated to use in other work.
Mizuhiki Cord -- paper cording that can be used as an embellishment on a card.
Mulberry Paper - a specialty paper that when torn, has feathered edges to add texture to your card.
Mounted stamps - stamps that have a rubber die, cushion and a block (usually of wood) as a handle and an index image of the die on the top.
N
Nestibilities by Spellbinder - metal frames to cut die shapes using their die cutting and embossing machines.
O
One Sheet Wonder - a cutting guide for a piece of decorative or stamped paper (9 x 12 or 12 x 12) to create multiple cards out of one sheet.