At the very least, ballasting, tamping etc to the tracks in and approaching the car barn.
Other potentials are:
#10 boiler work
Painting the car barn.
Car 67
Turntable
If there's time and people available, I know that Mike would like to see track laid down the Mountain toward the washout, so that we can fix the washout later in the year.
But we haven't really thought about it too much yet.