RV progress for the past weekend:

Purchases:

Drinking water hose
Y-valve (for water spigot/bib so I can have drinking water and an extra hose for cleaning the sewer pipe)
Pressure regulator valve
Clear sewer pipe elbow (to tell when the black water tank is clean)

Free things from Joe:

Maintenance:

More caulking, emptied my first tube
Used expanding foam to fill a gap under the sink, and some random other places I saw while I was underneath
Fixed the stereo power connection
Washed the removable bed cover
Vacuumed all other cushions