A simple Oracle Table. Using a single d6, get a yes/no answer to a question.

d6Result
6Yes, and
5Yes
4Yes, but
3No, but
2No
1No, and

You can adjust the odds as needed, such as Rolling With Advantage if you think an answer is more likely (or disadvantage if it isn’t).

The main advantage of this oracle is its speed: a single die, easy to remember answers. You can roll it mid sentence and get the answer fast enough to keep talking without breaking your flow.