Ask HN: How can I sell a service to your startup?

I'd like to provide a fairly simple service for your startup's office environment. It involves providing a nice yet simple perk to your employees, but not something a founder would want to spend much time worrying about. Nothing fancy, nor expensive, but something almost any employee would like to have around.

My question: what's the best way to approach founders/office managers to provide this service? I'm in NYC but basically have no network here.

How do you like to be approached about these things? Assume that once you actually hear about the service, you wouldn't find it annoying or useless.

a) Cold call/email

b) I introduce myself at a meetup and within a few minutes mention my offering

c) Showing up to your office to drop-off a free sample and some information

d) None - I only deal with people I know well

e) Other

I'm not really a sales guy. But I am genuine and don't give a shyster/hustler vibe at all. Curious about which approach to take.