Paul,
If you're trying to dig or grade with the bucket, a bolt on tooth bar makes one hell of a difference. Cheap too. Pop it back off if your back dragging gravel or dirt.
Ball peen hammer is invaluable and 4 replacement pins for every one on the tractor. Slather grease on every place that you need to slide something on especially PTO shafts.
If you don't get grease on your hands when you're hooking up an implement you're doing it wrong. You'll find you use it a lot more than you'd figured.
Haven't got a Mahindra dealer local yet though there's 6 dealers within 10 miles of each other.