at our show boutique (which draws many non-quilters too)the big draws are mug rugs, microwave bowl covers, tote bags (like for groceries, not fancy) table runners, seasonal wall hangings and crib quilts. Basically those things that make good gifts. With the mug rugs you could get your Sis to get some non-chipped, different mugs and see if you have scrapes to match for mug rugs.