People always imagine this as "I will pay you $100 to kick the puppy" and of course they would never.

But what actually happens is that you have a long-term donor. You rely on their help (they're paying for you to be able to hire a nice college intern who's really smart and has been fun to have on the project). They never tell you what to do so you see them as more of a friend than anything else. It's perfectly normal to get some lunch with friends and talk. You're stuck on some problems and they have some good connections that help you out. That might even be worth more than $100k, but it's not money at all so it's OK that they're helping you like this. They also talk you up, which is like free advertising except you didn't ask for it so that also doesn't count. Anyway, at some of the lunches they're telling you about what's going on with them and there's some problems they're dealing with that you could help with. They don't ask for help, of course, because they know you're independent. But being independent means it's OK for you to do what you want. Even help a friend out who didn't ask for help so they're not influencing you...