I saw this idea last year on Somewhat Simple. And we made these at this year's Super Saturday (a craft day at chuch).
The letters on the jar were cut on my Cricut, and I used the "pharmacy" font.
We found these jars at the dollar store, but there are twist lid jars at Walmart that would look good for this too. Once all the white strips of paper were in there, it seemed a bit bland, so I cut up some different shades of brown cardstock and folded them up to add a little color (and fill some space).