At risk of feeding the trolls, I'd draw a casual comparision between the canning jar and the bicycle frame as two widely-used products that might be regarded as so perfect that they've scarcely changed since they were invented just prior to the turn of the last century. Sure, the bicycle frame has been subject to innovations in manufacturing processes and a broader range of use cases, perhaps, but let's face it: at the end of the day, there's not much you can do to improve on a simple glass jar with a sealable threaded lid.
Whereas the diamond frame has inspired all variety of accessories and add-ons—hand-brakes, derailleurs, shifters, etc.—the tried-and-true canning jar has inspired markedly less ingenuity until very recently, when the current generation of DIYers has taken to the humble houseware as a versatile vessel for foodstuffs, perishable and otherwise. Now, the same folks who brought us the Cuppow canning jar drinking lid are pleased to present their latest product, the BNTO ("ben-toh"), a new accessory that further extends the utility of the standard glass jar.Canning jars are designed to store food safely and make an awesome lunchbox: they are easy to clean, cheap, and you can microwave them! The only problem is that sometimes the foods that taste the best together don't travel well together. So we took inspiration from Japanese bento boxes and created a conveniently shaped insert that separates a canning jar into two compartments so you can mix or dip like a champ. BNTO should provide the perfect companion for all of your food adventures!
As with their first product (and its subsequent iterations), Aaron Panone and co. are committed to domestic manufacturing and charitable causes (to which the company donates 5% of its profits): "Like CUPPOW, BNTO is 100% made in the USA from recycled food-grade polypropylene in our ongoing effort to divert as much waste from landfills as possible."