Resin is very versatile. It's strong and smooth when dried. 

The only thing to be careful with is that during the making of things, it's important to keep the windows open and wear full gears as the raw material for making these are mildly poisonous...once dried up, it's no longer harmful to humans and safe to use...

I've changed my keychains to these and they bring me a lot of joy, knowing Pikmin are hiding in my pocket ...