Fumble tables can be fun, but are often very combat specific. Here’s a d20 table for random mishaps suitable for fumbling on other rolls:
- Lose something
- Break something
- Make a mistake
- Slip and fall
- Bang into something
- Drop something
- Brain fart (lose an action/accomplish nothing this time period)
- Sneeze/belch/fart (make unwanted/embarrassing noise)
- Interrupted
- Chills/foreboding
- Misspeak
- Mishear
- Misremember
- Misstep
- Misunderstand
- Lose control (by personality type, e.g. rage, cry, vomit, panic attack, faint)
- Lose track of time (lose 1d4 time units appropriate to current task)
- Lose focus (Fail at current task, but roll accomplish some other task instead)
- Hurt self
- Hurt other