Unfinished wooden cups for painting and craft
What "unfinished" means, which paints and sealers work on bare wood, and the one thing to check before anything you have decorated goes near a drink.
Wheat straw cups for camping and outdoor tables
What wheat straw material actually is, why it is genuinely unbreakable rather than merely tough, and where it beats both glass and disposables.
Bamboo toddler cups: what to look for
How bamboo cups are actually made, why some are dishwasher safe and some are not, and the honest limits of a natural material in a household with a toddler.