"See how you can get full size brand name makeup for FREE! I haven't paid for makeup in 3 years!" for internationals, there might still be a cost incurred such as delivery not sure how much that can run into but great idea tho.
Solar Powered Window Socket designed by Kyuho Song & Boa Oh - The Window Socket attaches easily to any window, harnesses solar energy from its location, and transfers that energy into an internal battery.
Opening a big bottle of soda means having to consume it within a short amount of time to prevent it from going flat, but the Fizz Keeper Soda Dispenser can help to effectively extend the life of a bottle from a day or two to an infinite length.