Couple area's that I'll cover here shortly as time allows...complete with pictures and products used..
Re-sealing roof fixtures....removal of the old sealers and replacement
Replacing a hotwater tank...usually not all of it needs replacing, just the aluminum tank which cost less than half of a complete new unit.
Rear riser blocks....forget those airbags or air shocks, get her back up level in the rear
Sewer Dump Modification....getting rid of all that ugly piping that hangs down to low
Auxiliary Battery Installation....a second deep Cycle into the system