So you like semi-public? I'm not sure of the state/country you are in, so be careful. Most times even driving in your car (live the person above said) without a shirt can trigger the police and you would be arrested (or given a warning) for public indecency.
Anyway, as long as you aren't distracting yourself while driving or endangering others, try bringing any toys that you may have. I'm not sure if you have any, but I used to do this when I was younger.
Late at night, walk around your house completely naked but with a least a little bit of light so that there's a risk of getting caught.
Do you live in the country or in the city? If you're in the country, there has to be woods near. Get up earlier and walk there completely naked. Or if you want, with clothes, but take them off when you get there. Walk about home when it starts getting daylight. You can venture back for your clothes later.