Ask HN: Which job perqs mean the most to you?

(burner account)

I'm in the midst of negotiating an offer with a medium-sized startup and am trying to decide which, if any, perquisites to push for.

For example: one I'm considering is an education allowance to cover $n/yr in conferences, trainings, etc.

What perqs have you had / seen / dreamed-up, and why did they matter to you?

If you can, please provide $values where relevant.