Can I use materials from home to create a floating balloon?

Yes, just make sure you are careful so you don't damage the material. Also make sure you have the correct brush for the material.

A t-shirt because it is light and easy to dry, and sporty shorts for the same reason. If the shorts have pockets, you could store extra water balloons in there.

You can use many different things. I recommend trying scrapbook paper, magazine photos, newsprint, old sheet music, and old book pages.

This is just a simple drawing.You can add the rotor mast; it doesn't take a lot of work.

Water balloons are sometimes already tied. If not, of course! Make sure it doesn't have any sharp edges as you do not want anybody getting paper cut.

Yes, you can add anything you want, as long as it isn't sharp enough to pop the balloon. If the balloon is filled with helium, don't add anything that is...

Go to Dalaran and find the Windrunner's sanctuary. You will find four portals; one of them takes you to Pandaria.

When I hang floating shelves, I just use a level, a drill, measuring tape, and a stud finder.

Take them out the water slowly.