And some creative Deadhead made these buttons commemorating the event that would have made a great looking set of chips, long before LE's were a thing. The creative deadhead may have been eating some other type of buttons as Aladdin is spelled incorrectly!

Here is a live recording of the actual concert if you missed it.
https://archive.org/details/gd1981-08-31.sbd.miller.110200.flac16/gd81-08-31d1t01.flac