I recently discovered the Fumi and Yumi rubber stamp line. These wide-eyed, cherub faced images are adorable and made perfect bag toppers. (I ordered the stamps online from Yumi and Fumi Handmade - http://yumifumihandmade.com/) and the service was excellent.) I began with the Halloween decorated paper bags (back and front designs differ) I purchased from the Celebrations store (near the Mapunapuna Ben Franklin Crafts). I determined the size of paper (marker pen paper from BFC) I needed (in this case 2-3/4" x 5") and marked the halfway point. Next I stamped the images so that the heads were in the upper half of the toppers. I colored the stamped images with Copic pens and used a craft knife plus scissors to cut out just the heads of the images.
After folding the topper so the head popped up, I used Martha Stewart Halloween adhesive borders in the back to cover the cut out (dust the exposed sticky surface of borders with cornstarch so that the toppers will not stick to themselves). To cover the back of the image heads (because the ink bled through) I cut and glued on scraps of white paper.
I glued on the word banners ( K and Co.) which I found in my stash of Halloween stuff, but I'm sure that you can locate lots of suitable printed words or rubber stamps at BFC. The final step for these easy Halloween treat bag toppers is of course to fill them and staple them shut. Have a cute and safe Halloween in blogland!