We have about $10k in cash for projects, repairs, and maintenance that has a decent chance of coming up.
We then have $30k in a Roth, in the market, but accessible if we have something super expensive. I'm hoping to not ever need this, but having it helps me sleep at night.
We have everything else in retirement accounts, where we can't pull without penalties until we start transferring to the Roth through a Roth pipeline.