Was there an exit interview? Was any one curious about your plans?
In my future perfect alternate reality:
Google Ventures, GoogleX, or even just thwarted & bored midlevel manager aspiring to become an angel investor, would offer seed capital to any one turning in their badge.
"Hey @jasongrishkoff, if you ever need some cash for an idea, please talk to me first."
In my mind, that parting offer is central to Silicon Valley's magic. There's an apocryphal tale about a much disliked boss offering seed money to mutinous employees. I thought it was Shockley and the Traitorous Eight, but I can't find a cite.