You can use any worsted weight yarn that works with gauge.
The jar can be filled with candy or other treats
or used as a “candle” with a small battery operated t-light.

Additional Materials (for machine knitting):
Mason Ball jar (wide mouth quart)
Row counter (RC)
Latch tool
One prong transfer tool
2 prong transfer tools (2)
Weights
Tapestry needle
Ribbon or yarn to tie at top (optional)
Battery operated small t-light (optional)