i've always been partial to painted calipers, cheap relatively, quick to do right
a re-leather of the steering wheel does wonders for morale as its your major point of contact with the car, and its also not too expensive
same goes for the gear knob
not very glam i know but....going round and either tightening loose screws/bolts etc, or adding in a little rubber washer to stop the incessant squeaking
silver foil lining for the rear clusters to get a stronger light
take the car off the road for a few days whilst you:
maybe remove a few choice items from under the bonnet, the stay, brackets, hinge, and send them off for powder coat/chrome/etc, i experimented just doing a few the cheap way with a thorough clean and degrease, then spraying on that vht paint to get a nice finish.