At the top of my above-mentioned list are 3 unused family burial plots. Gma and Gpa bought 2 extras for my uncle and father. Uncle lives in NYC and aunt has said over her dead body is he getting buried in Pennsylvania. That's one extra. Daddy wanted his own for him and mom and bought his own 2 plots in the same cemetery. So that's 2. Mom wanted to be cremated, not buried, so she's on top of daddy's plot and hers is unused so that's 3.
Now, the problem is, as you say, the digging. Also that they're 1,200 miles away from where I live which poses a logistical problem.
Yes, I have given thought to this before.