Their eyelash curler was by no means terrible, but if you're looking to purchase one, Shu Uemura is the go-to for good reason. That's the only accessory I've tried, though. I'm curious to hear about the tweezers as well, since I've never been satisfied with a pair in my life.
Oh, I've gotten the eyelash adhesive, too. It's the same brand (Duo) as you'd find with the lashes at the drugstore, and as far as I can tell, is of no different formulation. I could be proven wrong here, though. I am no glue expert.