You may want to consider building a garage if you are looking to do some thing to truly express yourself. To see what is possible, lets take a look at a couple examples. Take a look and see if anything my friends did inspires you, as both of these examples come from friends of mine that have redone their garages.
Two Examples Of How To Build A Garage That Is Fun
One of my friends is a huge fan of the Grateful Dead and decided to build a garage to store his van in the winter and hang out in. The cost to build a garage like this was a factor, but he was pretty open to spending some money. He then went about building a detached garage.
He made sure to purchase an extra sturdy and insolated garage door to make sure that the garage would be comfortable in the winter. He took his extensive collection of cloth banners that he had collected and hung them throughout the garage. I would estimate he had approximately twenty of them and they took up most of the walls and ceiling. He parked his van that he used for summer tours back in the day on one side of th e garage.
All though every once in a while he still takes it for a spin or the occasional show, most of the time it just sat there. On the other side he set up comfortable couches and throw rugs. A massive steal your face was painted on the floor. The walls underneath the hung banners were painted tie dye. All of this created a really unique area and since it was the garage it was not something that he needed to show people. In addition, it could easily and quickly be converted to a normal garage with a couple gallons of paint and some time.
The next friend I have was a huge Dale Earnhardt fan and when he died he built a garage that is somewhat of a shrine. The first thing he did was paint a large red, black and white 3 on a black background on the garage floor. After that was done he went about collecting as much Dale Earnhardt memorabilia as he could collect. He filled the garage over time with as much as he could.
On the one side he has a mechanics shop set up complete with a full hydraulic lift capable of picking up a loaded cargo van and on the one side he parks his vehicles. He also has an extensive collection of tools here as well including air compressors and pretty much everything needed to do a full tear down and rebuild. To fund this project and to help offset the cost of all the tools, he has done work on the side in the garage. His idea on how to build a garage is truly inspirational.
As you can see there are two very different approaches on how to build a garage into something that is unique and your own. Hopefully this helped to give you some ideas on what you can do.