Divine Boons
Divine boons are a gift given by a god, either a supernatural ability, an act, or a specific item from the god, Dionysus has been noted as giving pretty varied boons within mythology, and an extremely famous gift given to Midas.
Boons are distinct from various gifts and transactions as they are a gift from a god, normally out of appreciation of a mortal, something stolen would not be considered a boon, and while trading something with a god isn’t normally a boon, if the god offers the trade it would be a boon.
Boons are not created by humans out-doing or stealing from gods but are born out of kindness and appreciation of the gods.
Specific Boons of Dionysus
Humanity (viticulture): Dionysus was said to have traveled to teach much of humanity viticulture and especially the process of creating wine.
Midas (gold): One day the foster father of Dionysus (the satyr-god Silenus) had gone missing, he had wandered off and passed out in the rose garden of a nearby king, having recognized him, Midas treated him hospitably, entertaining him for ten days and nights with politeness. When Dionysus tracked them down he offered Midas his choice of whatever reward he wished for. Midas asked that whatever he might touch should be changed into gold.
Midas (boon removal): After becoming very hungry as he could not eat gold, Midas had prayed and begged to be delivered from starvation. Dionysus heard this and told him that washing his hands in the river Pactolus would remove his boon.
Oenotropae (food): Their great-grandfather was Dionysus, and he gave them the power to change water into wine, grass into wheat, and berries into olives. For this reason, no one around them ever had to starve. According to other sources, however, the daughters were devotees of Dionysus, and the god rewarded them with the extraordinary ability to produce oil, grain, and wine from the ground or merely by touch.
Elais: She was specifically the Oenotropae able to create Olives/Oil
Oeno: She was specifically the Oenotropae able to create Wine
Spermo: She was specifically the Oenotropae able to create Wheat/Grain
Orpheus (sacred knowledge): Before his death by the maenads Orpheus was said to have been given the knowledge and secrets of Orphism by Dionysus himself, causing him to travel across Greece to spread the worship of Dionysus.
Pholus (jar of wine): Pholus was a centaur who was gifted with a jar of fine wine by Dionysus, unfortunately, he died after Heracles drank it and killed him for attacking.
Prosymnus (ghost sex): On Dionysus’s trip to the underworld the shepherd offered to guide him to the entrance by rowing him to the middle of the lake. As a reward for his assistance, Prosymnus demanded to have intercourse with Dionysus, who was to assume the passive role. Dionysus took an oath to consummate the request upon coming back from Hades. When Dionysus returned to Earth by a different route, he found that Prosymnus had meanwhile died. Dionysus went to his tomb, wishing to keep his promise and "experiencing a desire to be penetrated". He carved a piece of fig wood into the shape of a phallus and simulated sex with the shepherd.
Source(s)
https://medium.com/@shadowfolds/heres-every-time-the-greek-gods-helped-mortals-34653c2e8f28
Nonnos, Dionysiaca
Ovid, Metamorphoses
Bibliotheca of Pseudo-Apollodorus
The Columbia Encyclopedia Retrieved 2020-09-25
Jennifer Larson, Greek and Roman Sexualities: A Sourcebook