Kit Rig is a free rig for Maya. Available from the website animprops.com
Kit Rig (Free)
Built By Colossus Rigs
Built By Colossus Rigs are free and paid Maya rigs available for download. Founded and run by Roman Jeffery.
BOTW Link Rig
BOTW Link Rig is a free Maya rig based on the Breath Of The Wild version of Link (similar to the previously posted Zelda Rig). Made by Christoph Schoch.
Agora Studio Rigs
Agora Studio have been creating a bunch of Maya rigs and releasing them for free primarily to be used in the AnimChallenge. Check them out HERE
51 Animation Exercises
51 Animation Exercises is a list of exercise ideas that can be used when you are unsure of what to animate. Whether you’ve animated a bouncing ball or not, this list will have something to keep your skills sharp. Compiled by Animator Island
BOTW Zelda Rig
BOTW Zelda Rig is a free Maya rig based on the Breath Of The Wild version of Zelda. Made by Christoph Schoch.
Zelda Rig
The Zelda Rig is a free Maya rig made by Christoph Schoch and is available on his Gumroad page
Link Rig
The Link Rig is a free Maya rig made by Christoph Schoch and is available on his Gumroad page
Animator's Resource Kit 