The Pyx (1973), directed by Harvey Hart, reviewed here by the amazing movie review site Outpost Zeta.
Food doesn't figure prominently into the story of The Pyx but with a title like that, during the 31 Days of Halloween, how could we resist making some homemade Pixie Stix--errrr, Pyx Styx?
It's super easy. For a batch of 8 Pyx Styx, all you need is a packet of regular (unsweetened) Kool-Aid, sugar, paper, and tape. In a small dry bowl, mix the powdered Kool-Aid and 1/2 cup of sugar until evenly mixed.
Roll up the paper into a narrow cone or tube, fold one end over, and tape it securely. Pour about 1 TBS of the pyx myx into the open end. (Trick: use a creased piece of paper to act as a funnel.) Fold over the open end and tape it shut. That's it!