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Yes, they do have brackets and things to hang the televisions on the walls. http://www.usa.philips.com/c/tv-and-monitor-accessories/fixed-sqm6375_27/prd/
You can use Command products to hang pictures without nails or ruining the walls.
Things That Hang from Trees was created in 2005.
repaper
nails, or fancy hooks
There are these things called Magnetacks that will hang up your poster without damaging it. They use magnets so they don't actually puncture or damage your poster in any way like tape or thumbtacks would. They're pretty inexpensive too.
Things That Hang from Trees - 2006 is rated/received certificates of: USA:R
Target, Walmart, Pier One, almost everywhere.
Clothes
Things That Hang from Trees - 2006 was released on: USA: 11 March 2006
There are several ways to hang shelves without damaging walls. Here are a few options: Use adhesive hooks or removable wall mounts specifically designed for hanging shelves. Install floating shelves that do not require brackets or drilling into the wall. Utilize tension rods for lightweight shelves that can be placed between two walls without any mounting or drilling.
u need hang glider and parachute