Here is a portable kit that lets you perform bodyweight exercises anywhere. Monkii Bars 2 is a lightweight trainer that adjusts to your fitness level. It can be used inside and outdoors. It comes with an app that helps you find areas to exercise and shows you which moves to try.
Monkii Bars 2 are machined from powder-coated aerospace-grade aluminum. They weigh only 9oz. They are durable and weather resistant. More information is available on Kickstarter.