These are activities using tools you would have to download. Take a look!
LiveCode is a tool for building apps that can run on any device! Works with Mac or Windows.
SonicPi is a tool for live-coding music. It can be downloaded onto any computer. There's a tutorial built into the software, and more available through RPi Projects!
Alice is a downloadable tool that lets you create 3D worlds with both blocks and text.
If you have Minecraft PC Edition and can install a mod called ComputerCraft, this e-book can help you use code to build amazing things!
Stencyl is another game engine you can download onto any computer.