Truro Jar.

I haven't been able to find the definition of a Truro Jar.  This one is a ribbed jar with a small solar panel in the lid charging a battery which powers a small LED.  Most on sale look like this.

Our grocery delivery was due after dark, so Clickychick was keeping an eye out and occasionally being outside.  She put the Truro Jar on top of the firepit.  The patterns it produces always intrigue me, so I tried some shots.

Fir the gentleman who is bound to ask/comment the dark curve, bottom left is the reflection of the rope handle in the stainless steel cover of the firepit.