There’s a free student version of Maya that the ART tools WILL work with, you could try that. You have to sign up to the students.autodesk.com website (just say you’re home-schooling yourself, I don’t think they really check), download the student version and use that.
The only two catches with the student version is:
The license is time-locked to expire after 3 years from initial activation.
You can’t ‘legally’ use any assets you create with the student version in a project you plan to release commercially.
Autodesk HAVE released a scaled down version of Maya aimed at indie developers, it’s about 1/4 the price of full maya, and it’s called Maya LT, but at the moment, it’s missing a few key things that limit it, such as Python support (so the ART tools won’t work), and there’s no GoZ support, hopefully, these issues will be addressed soon.
So right now, your best option if you want to use the ART tools, is the student license.