Or, go in to work in the morning and not come home for 2 weeks due to a widland fire assignment. LOL.
If I have something lingering in the For Sale section and I am out of town I make sure to tell the buyer what is going on with me and ask if they want to wait or move on. If it's boxed up already my wife drives past a hundred post offices on her 2 hour round trip to work and she can help out.