I'm a Hellenic polytheist, primarily answering to Hermes.
I have three oracular method: dice (astralagoi)--the sannion, tiles (pottery shards w/Greek letters)--the sannion. You take three coins, ask a yes-no question, then toss the coins. A majority of heads=yes (emphaticness governed by number); tails=no. I've refined the method by adding two more coins so that sublter readings can be garnered.
My humblest apologies if the links don't turn out as expected. This is my first time trying some of this new-fangled gadgetry. You can always google, after all.