Ok, that is another option that should be adopted . People of a certain position should be celebrated .Well, this is what I also mentioned. I worked in a place that never had much employees. However, they still never celebrated birthday of employees. They celebrated birthdays of high-level employees only.
But personally I still do not see the need. if you choose to celebrate then go ahead and do it on to all and not only to a certain people so as to prevent other people from thinking that all their efforts are not being appreciated.