Hot water in a jar?

[Snikwahjm]

I found quart jars at Rural King in the chicken feeder department. Paint them black? The jars are made from a soft type plastic so I wonder if it would be safe if you heated water in it. Melt if too hot? May be ok for showers but drinking? Take a lot of jars for any decent shower. The cool thing about the jars is that a mason jar lid fits it as does a blender blade kit. 99 cents for the jar at one RK and $1.99 at another.