Roll of unopened quarters; caused a big fuss at BRS until I explained what they were and without even a second look I was on my way.
Family member heading home from a family vacation out of MCO to CWL just after 9/11 - in the late October. She had four snow globes in the carry on and it caused a lock down at the check point; she was taken aside with several military personnel heavily armed. That took a good 30min until everyone calmed down - not a shock given the general feeling at the time.