Of course, we should all be aware of what we're packing in our carry-on luggage - anything that might be considered dangerous could be confiscated at a security checkpoint.
Also, there are seats in the diner that always fall off the table. If you have a scene where you're packing up at the end of the day and putting them on the table, they just slide off.
Writing, and its theatre of operation, is better than working shifts packing frozen sausages; that's all I need to think about if I'm having difficulties.