Thanks for posting this! I had no idea these had the same screw thread as mason jars! Now I can blend/chop/mix things in the same container I might store it in, leaving only the blade to clean! Also great for mixing up a beverage in the smaller pint jars.
Whenever I need to replace a blender I take a mason jar lid to see if it fits before I buy it.
I use a pint jar to chop onions for my homemade BBQ sauce. Put in chunks of onions and fill about 2/3 with cider vinegar, blend, and take outside to open because the aroma will be strong. The liquid makes it blend better.
There are too many new and different mistakes out there waiting to be made to be wasteing your time repeating the same old mistakes.
We had a magic bullet blender and it broke on us in about 6 months of using it regularly for making baby food. I now have a Blendtec, which is a lot more expensive, but I've used it 2500 times and its still going as strong, vs about 200 times w/ the bullet before breakage.
One of the things I prefer doing is buying things that I know will last as even though it costs more money, the raw materials involved are comparable to a regular blender yet will last longer than potentially dozens of lower quality items, which in my mind is much more sustainable and environmentally sound.