Stock options don't make much sense, since the company's private. [It still does, if you are a facebook of sorts AND the regulatory system permits sites like secondmarket, but I digress.]

I could think of some:

1. Health benefits to parents and parents-in-laws
2. Sponsoring a fuel-saving bike to drive to office
3. Gift cards for occasions like completion of 1, 3, 5 years of service

I really could do with more suggestions here. Appreciate 1 response per entry for ease of up-voting.