I was thinking of making a dough okay and knead it and put it back in the fridge so next day i can grab the same dough to practice again and again but how long does it take for a dough to get bad or if there is a way to maintain it , so that i can keep practicing the kneading of the dough there?
Or if there are any other objects that i can practice the knead of the dough there.
You don't say why you want to practice kneading. In my opinion, the best way to practice is to make your bread. Even make smaller batches of dough, eat and enjoy the bread and see whether you can detect any changes as you get more experience.
Pretty soon, you'll be wanting to learn about reduced kneading techniques. :)
The way to make good bread:
To practice kneading, make bread. Other practice (I mean inventing methods of practicing, or kneading while not exactly making bread) is not helpful, because having the goal of actually making bread is part of the practice.