Belts, somewhere around 70k, or when they get worn. Trans fluid, Oil, all filters (including cabin filter if you have it), spark plugs, distributor cap+rotor if you have it (i'm not familiar with your generation civic), check coolant, adjust valves, check brake pads, lube brake rotor pins, rotate tires.
All that is supposed to get done every 30k, or thats what honda recommends.
At 100k, timing belt, and normally if you go to a dealership, a waterpump (its not much more, and no more labor cost when they do it with the timing belt).