merge of T1 info: unconfirmed
The Festival of Thoth requires an altar surrounded by 21 scampering beetles, and a sacrifice of an ambrosia made from a specific (12 percent alcohol, 2 vintage old) wine and ink.
Try the Wine Inventory to find a supplier for your wine and any beetle breeder for ample spares.
Dropped beetles disappear in roughly 3-4 minutes. Since it can take a minute or two just to pick them all up, it would be wise not to drop any you're afraid to lose. Keep a few extras on hand as well.
QUESTION - For harvesting carrots is useful to "nail" the beetles (they stay for an hour without moving) overweighting and dropping the beetle when asked to drop something. Why this system doesn't work here? -Sabuli
Well, they're not scampering, are they? -Sedelyan
For humor value after the festival, turn the beetles into bags (self->utility->make nearby portables look like bags). They still behave as normal beetles; only the way the client renders them changes.
See also: The Test of Festivals, Festival Schedule, Festival Needs and Determining Festival Requirements.