Johnny's App of the Week is Duck the Line. iOS and Android. Use this to get a fast pass to hundreds of locations.
Another app - FAA Wait. .99 find out about delays before anyone else.
If you want to donate to rebuilding Notre Dame, head over to NotreDameParis.fr. Be careful of phoney fundraising for it. Disasters like this bring up plenty of scammers. So stick to the official site. Or, give to a local church. Notre Dame's rebuilding efforts have already raised several Billion dollars.