oil and filter, air filter, cabin air filter, fuel filter.
depending on year car and transmission
timing belt and since you are there the v-belt.
I changed my 00 TDI tb @ 40,000 miles and it looked pretty good. I think they have since pushed the TB change for 00 with 5 speed to 60K miles but I haven't seen that in writing. I would check it for sure.
Depending on how long you have owned the car you may be in for a brake fluid change (2 years)
Rotate the tires as well.