1 - Formula for a random magic potion - following the formula requires at least d6 days, d6 x 100gp, a well-stocked lab (d6 x 1000gp up front) and at least one special ingredient (see original DMG for suggestions)
2 - Partial map of a heretofore unknown island or continent
3 - Recipe for preparing a seven course meal using the components of a single monster (randomly determined) for all dishes
4 - Cipher key for a code used by the Assassin's Guild or some other secret faction
5 - Steamy correspondence revealing the indiscretions of a local lord
6 - Sheet music for a popular folk song adapting it to tablature needed for a three-handed mandolin player
7 - An awesome list of treasure, no location given but marginalia gives a clue as to the identity of the writer of the list
8 - The Tale of the Nymph and the Acolyte, bawdily illustrated
9 - An apocryphal holy text used by an infamous heretical sect
10 - Anatomical diagram showing the weak points in an exotic subspecies of monster (e.g. rock trolls, purple dragons, three-eyed toads), careful study over 2d6 weeks and an Int check will yield a permanent +2 bonus to hit such creatures
11 - Letter from local merchant to another in a far away city establishing a new caravan route and setting timetable for starting the journey
12 - Plans for the king's castle revealing both the location of the treasury and a secret door in the queen's bedchamber leading to a secret dungeon below
13 - Plans for the Sailing Chariot of Stevenus, a wind-powered land vehicle capable of carrying up to six. Only really works on windy days across flat plains.
14 - Ten or twelve sentences translated from Common into another random language, with phonetic spelling for the latter. "Surrender or die!" and "Where's the treasure?" top the list. 33% chance inaccurate
15 - Partial list of the command words and functions of a lesser known artifact
16 - Map of a nearby duchy marking three places as prospects for new gold mines
17 - Ransom note from bandits holding captive the heir of a local lord.
18 - Diagram of the hollow earth showing major access point below nearby city
19 - Seemingly ordinary grocery list except for next to last item, "1 pound elf flesh".
20 - A two column list, monsters in one column and gem types in the other, suggesting some sort of relationship between owlbears and chalcedony, trolls and amber, etc.
Safety Advice, Moral Panic, Raggi - I found this advice in a role-playing book: [W]hen dealing with surreal, mind-bending horror, one must be careful. Although everything that happens in a ro...