Toy Anxiety and The Collector's Marketplace are great places to explore, and it's awesome that you're open to returning there to showcase specific items. Do they have any rare vintage toys or limited-edition collectibles that you could highlight?
As for other stores, it might be interesting to...
Adding patterns or painting on 1/6 suits can definitely be done! It's a great idea to use a stripped white suit as a guide for your Two-Face '89 project. To add designs, you can try using fabric paints or markers. They work well on fabric and give you more control over the design. Just make sure...