I’m an avid boxer and wanted to be able to work out in the convenience of my garage without making too much noise, and still make it easy to carry out normal garage functions (workshop and parking the car). I came up with an original design of a speed bag platform that locks away in a raised position, completely out of the way for normal garage usage. Then it unbolts and slides down when ready to engage. I also used rubber dampeners where I mounted it to the ceiling rafters to reduce vibrations and cut down on noise travelling through the house.
I documented the whole project in my blog post at http://www.justmeasuringup.com/blog/diy-boxing-speed-bag-station-that-stows
I work on a lot of projects in the garage, and having a speed bag right in the middle is a great way to take a short break in the middle of it all - or when I bang my thumb with the hammer and want to release some anger :)