Try a sleeping-themed craft for your Girl Scouters, having them create personalized pillow cases. To prepare for this craft, purchase some generic white pillowcases and fabric markers in a plethora of colors. Provide each sleepover participant with one of these pillowcases, and spread the fabric markers out in the middle of your crafting table. Encourage your Scouts to jazz up their bland pillow cases, potentially offering a prize for the best pillowcase as voted by the sleepover participants to give crafters an extra incentive to try hard.
Give your Scouts the opportunity to create their own playthings by having them craft hand-stitched dolls. This craft is particularly ideal if your Scouts are in the process of earning their sewing badge, as it will provide extra practice in this skill. Prepare for this craft by creating a generic doll shape with a round head, oval torso and rounded appendages. Cut enough copies of this shape for each Scout to have two. When your Scouts sit down to tackle this craft, give each participant two cut outs, a length of thread and a needle. Help your Scouts line up the two cut outs and stitch around the edges, leaving a small opening at the base of one foot. Next, have the Scouts flip the pieces inside out then stuff them with fiber fill before closing up the final opening. Provide the crafters with paint and other craft items, including yarn, to decorate the doll.
Mix some garment creation into your sleepover by having your Scouts create customized T-shirts. Purchase a plain shirt for each Scout. When crafting time arrives, stretch these shirts over pieces of corrugated cardboard to help them lay flat, then have the Scouts paint the shirts with puffy paint, customizing the items. Add Girl Scout-related accents, such as your troop number, to the shirt as well.
Make your craft inexpensive and reflective of something at the core of Girl Scouting -- friendship. Gather an abundance of old magazines and allow your Scouts to clip them up, cutting out pictures that they see as reflective of friendship. Have your Scouts glue these images down in overlapping form to create collages that represent friendship. To make the collages more specifically reflective of your Scouts, allow them to also integrate pictures of them and their friends. Purchase craft frames to frame the finished products and give the pieces a more polished look.