When I'm home alone with nothing to do and I don't feel like going out I cook myself an elaborate meal. (Usually comes out like crap, but I try)
Do you have a dog, take him for a walk in a busy part of town, like a Main Street or something. Alot of people will come up and start chatting away. Personally, I feel uncomfortable being somewhere if I have no particular reason to be there. For example, I feel uncomfortable walking down a street unless I'm heading somewhere in particular. Having a dog with me gives me reason and comforts me.
What about some gardening. Throw in a couple tomato plants and a bean plant, you can't go wrong with them. I find it very relaxing. I even have a banana tree growing up hear in New England. Unfortunately, I have to leave it when I move in a few weeks.
To be honest, I agree with trucker on looking for a job. I know landscapers are looking for seasonal employees this time of year. That was how I started, lugging rocks and mixing cement in the summer, now 5 years later, I'm a foreman directing small masonry jobs. I know carpenters are always willing to hire people just to clean up and move lumber. You can also pick up tricks of the trade for when you own your own house one day. Plus your outside all day long getting fresh air and exercise. Alot of times you can walk right up to a construction site and ask for the general contractor and then ask if anyone needs any help. They will probably pay you cash and tell you to come back tomorrow if you want more.
Can you take summer classes. Alot of times they are free and you can take classes that appeal to you but can't fit into your schedule. I'm taking psychology in the workplace.