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:


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


I really could do with more suggestions here.

EDIT:
Thanks everyone for the response. To summarize, here are the additional things my HR could do: 


Matching contribution to employee retirement fund provided the employee contributes
Funding continuing education, professional courses etc.
Company subscription to ACM, IEEE, Safari Books etc. 
Meal vouchers
Membership to gyms
Hosting a recreation room at office
Spot bonuses 
Time off for code spikes in recognition of individual contribution 
Sabbaticals


Paid lessons for anything they want - programming, human languages, music, arts etc.