I love this thing. If you live with a lot of shared walls, and feel nervous about making sound practicing singing, this is a good product for you.
It is also works excellently as a SOVT device. Singing through it, everything else the same, could be therapeutic.
I like this water bottle. The mechanism is really cool if you are lazy like me but also like throwing your water bottle at the couch from distance without it leaking.
Drinking water is good for you.