Working law that allow people to use part of their retiring time as a sabbatical time. This would only increase our working productivity.
Limit military budget by law to 1 per cent of federal spending. (we already have enough weapons to kill us all). use money for education
Check in with only your towel and slippers. Makes the security check a breeze.
One travelling vintage jukebox that plays an international playlist made online on the site. for an unexpected worldwide music experience.
Bookstore that sells compilations of the best twitter authors, with serious curatorship.
A google like system for retail stores (Target, etc), showing location of products on visual map, quantity available, raincheck option, etc.
Too many people get wet because of unexpected storms. Public umbrellas would solve that problem.