Transform the old and unnecessary in useful and interesting is a very exciting process.
Many people prefer to give things a new life and not throw it away. The first and easier option to convert the old thing: you can decorate them, to give a new image. There are way more complex : you can give things a new story and a new feature.
Even the old bike can be a stylish element of the landscape.
You can make an old bike into a beautiful flower pot.