To cull the crap you need a shed.

The first step in building your man cave is to move all the stuff you have accumulated out of the space. So, you need a shed right. These little babies are specifically designed to go down the side of the garage. They have a set of double doors at the end, plus a heavy-duty ramp so you can wheel bigger things in and out no problem. You choose either 3.0, 4.5 or a whopping 6.0 metres in length. You can store a serious amount of gear in one of these. Free delivery to you home anywhere in Australia.