There are actually a ton of weird "-mancies", ranging from cool to creepy to downright hilarious. Tyromancy, for example, is the art of divination through the observation of cheese.
i hadn't thought of that! looking it up, the list goes on forever!
https://en.wikipedia.org/wiki/Methods_of_divinationalectormancy - divination by rooster
choriomancy - divination by pig bladders
eromancy - divination by water vessels exposed to air
hyomancy - divination by wild hogs (GO HAWGZ)
moromancy - divination by fools
phyllorhodomancy - divination by rose petals
radiesthesia - divination by pendulums
sikidy - divination by drawing 16 lines in sand
WOW