Cheengoo offers some great eco-friendly alternatives for rattles, teethers, and pacifier clips. They've got the cutest wooden and crochet options. We love the wooden teether with animals crocheted on -- they use untreated 100% FSC certified maple wood wrapped in 100% cotton yarn and stuffed with biodegradable corn fibers, so they'll keep your teething Tiny Revs happy while also saving the planet!