DIY beer cap coasters oh these are kind of fun. -- this would be fun just putting different things in the resin. hmm.... can make theme specific - sewing (needles, thread, buttons); crafting (whatever you want!) etc.
How to make Resin Coasters. You need: Casting resin Resin catalyst Resin mold Mold release Plastic or plastic coated cups to mix in Something disposable to mix with (I used popsicle sticks) A well ventilated area Bottle caps to set in the resin