While the complex material mentioned in some PGM spells has almost become a running joke amongst practitioners, there are also many spells that require no material or something simple like a piece of paper or a leaf.
Recently a friend mentioned that they had been sleeping poorly. I had this spell bookmarked for the next time an opportunity arose because the instructions seemed very simple. They drew the symbols and wrote the words on the bay leaf, then slept with it in their pillowcase. When I asked how they slept the next day they answered “deeply and far too long” so you may want to test this on a night where you can sleep late the next day.
PGM CXXIII a 51-55
For Sleep: on a bay leaf [write] [charakteres] ΘΑΡΑ ΘΑΡΩ
Whole dried bay leaves are a common cooking ingredient and can be found most places spices are sold.
This spell does not seem to require any additional ritual or special ink.
(Please see the featured photo or consult the PGM for the charakteres/symbols)