There's tons of really great ideas out there for working on one's home. One of the best resources for it can be found at http://www.diynetwork.com/home-improvement/index.html
If you are good with do it yourself projects, you could install a bench in your bedroom window. My advice would be to visit a local DIY store in your area. They are generally quite good at providing advice for your DIY projects.
HGTV is a channel that focuses exclusively on home repairs, construction, and Do-It-Yourself projects. DoItYourself.com is also a wonderful resource for that information.
Good DIY project websites include Instructables, DIY Network, 5min, DIY life, Gizmodo, Craftzine, Do It Yourself, Green Upgrader, Lowe's, HGTV, and Home Depot.
Coolto5 is a good one.Otherwise just be yourself....Remember BE YOURSELF!!!!!
There are several brand that offer good, strong, well-constructed outdoor couches. If you are a handyman or into do it yourself projects you can even construct one yourself with help from a Home Depot.
by yourself
prankify yourself
nothing
The website Reddit has it's own DIY sub reddit. http://www.reddit.com/r/DIY/ There you can find some good ideas for your next project and also some tutorials and people to ask questions to.
Here are some links to try out.