I just ordered a pi3 to run blender. For those asking why you'd want to do that, you can run it headless (no UI) and use something like CrowdRender to share the CPU cores. I'm building a 10-pi render farm to add 40 cores to my system. Renders go lighting fast and the whole thing costs under $500
Blender doesn't need to be installed, so even if you have one version installed on your system, you can have other versions that sit in your filesystem and can be run without further operations. Apart from convenient launcher icons and multi-user availability, there is no advantage in "installing" Blender.
To get Blender 2.81a: on the compute machine:
# go ...