Hi Amanda,
We've done a LOT of things with corporate groups. The "owner" goes between me and our Foundation team: if it's a donor relationship, or a prospect, they are the responsible staff member. If not, it goes through me. We've done onsite events (ice cream socials, lunches, cookouts, sports parties - one group just held a watch party for the SEC championship game). We've also had groups assemble treat bags or care packages for staff, patients and families at their office and drop off for us to hand out. It all depends on the company, size of their group, what they want to do, and of course - what is actually helpful for us. They cover all the costs of whatever they do.
Happy to answer any additional questions.
-Alex