One of our all-time favourite family home evenings was reading the kids the story of Captain Moroni and the title of Liberty. This was always one of my favourite stories... and Captain Moroni is such a heroic freedom fighter it appeals to the nature of our boys. After we read the story we gave the kids an old sheet which they were able to act out the story and rip their coat and write "Freedom" on it. They then attached these pieces of cloth to broomsticks/mops and paraded round the house holding them.
The kids had a blast making and waving them around. Some of the best FHE's have been the simplest. :)