What are some activities that people can do alone without looking awkward or weird?

I've done half the stuff on Lisa's list without a companion. I eat out alone all the time in little cafes. They know me and are super nice but know not to bug me when I'm reading my book or magazine. Sometimes I feel chatty. If I don't see anyone else I want to talk to, I can chat up the owners or employees.

I've been to the movies alone, gone for walks and hikes alone. I like to hang out at parks of all sizes, or one of the plazas or cafes downtown, people watching or reading. Sometimes when I'm outside, dogs come up to me and I pet them, and that's nice cause my building doesn't allow pets.

Sometimes I want fresh air and to enjoy a great view but don't want company.

You only look awkward if you feel awkward. If you don't act like a stalker, no one gives a crap if they notice you at all.

Going protesting in WashingtonnDC

Swimming, going to the library to get books (no one says "do you want to watch me chec out books?"), running (no one says "do you want to jog with me?" - well, some people do, but it's rare), on the computer, pretty much EVERYTHING (no one says "do you want to share a computer and a chair with me?").

Read a book.

bike ride, rollerblade, fishing, attend a movie, go swimming, bbq, go for walk in the park, museum, zoos, etc - basically everything!

Hike.

Go hiking by yourself.

Learn what you need to have to be safe and go.

You're welcome in advance.