What a clever little system! My kids eat sprouts (almost) like sweets and they have been fascinated to see them grow. We grew some wheatgrass in eggshells with faces drawn on, and love to give our "egg people" a haircut! The sprouter lids work great, are sturdy, clean easily and the sprouts can be stored in the bottle with the sprouter lid on in the fridge for quite some time without going gross. I have been recommending this system left and right. :-)