I bought a Scotch Thermal Laminator for ~$30.00 last Spring. i absolutely love this laminator! I have laminated 8.5" x11" pages and many bookmarks. I just insert the bookmarks into the pouches and send them through the machine. You can buy smaller 5.31" x 7.28" pouches or larger 9" x 11.4" pouches. I've never had a problem laminating multiple bookmarks in a single pouch.. They stayed in position and did not shift. Not sure how small your bookmarks are..if about 3"x4" I think they will be fine. The bigger Walmarts sell the Scotch laminators and laminating pouches.. I purchased my laminator from Hancock Fabrics. Try Target, Walmart, Joanns, maybe Michaels... Hope this helps!