Fully acrylic keychains would be great, along with other finishes encased In the acrylic like glitter or iridescent finish. But I’m having issues with customers reporting the images on their keychains are peeling or scratching off too easily. I’ve experienced this myself with the keychains as well. So I think having acrylic on both side would alleviate and protect the images better. In addition to the holographic stickers “glitter or sparkly stickers” would be amazing. Kind of like the finishes Sticker App offers.