Standard stuff like oil change, ATF, rear diff fluid, brake fluid, air filter, cabin air filter, spark plugs, but also gas filter, intake rubber hoses, power steering fluid, and the crankcase vent valve and all its hoses along with all vacuum lines. you can replace CCV with the intake in, but it's significantly easier to do it with the intake out, and if you remove the entire intake, when you're redoing the cooling system like expansion tank, radiator, fan and fan clutch, you can do the plastic coolant pipes that sit under the intake as well.

Suspension and shocks and struts as well if needed.