With a few good-size potatoes and assorted miniature cookie cutters, you and your kids can make personalized wrapping paper, cards, T-shirts, place mats, and napkins. Choose large potatoes that, when halved widthwise, have a surface wide enough to accommodate a cookie cutter. Place the cookie cutter on a table, cutting side up. Center the potato over the cutter and tap, pressing the cutter at least 1/2 inch into the potato. Using a sharp kitchen knife, cut the excess potato flesh away from the cookie cutter, making slices perpendicular to the cutter; this is a job only for adults. Once the excess potato is removed, pull out the cookie cutter.
To form the center of a flower or another design, hollow out with a melon baller. Potatoes bleed, so wipe each surface dry with a towel before inking and stamping. Make sure to use the proper ink; if you're working on paper, both pigment- and dye-based inks will work, while fabric requires dye-based ink. For paper designs, place a piece of felt beneath the piece of paper to cushion the surface; this will result in a crisp, even print.