The Ready State Virtual Mobility Coach is like having a virtual Kelly Starrett in your pocket.
You may be able to find a used bar on Craig’s list or at a Play It Again Sports.
A dumbbell may be an option.
You could do the MWods requiring a barbell days that you are at the box and do MWods that don’t require a barbell on days that you are at home. The episodes page has tons of options and all the episodes from day 1 of the MWod.