Looking at my own bibliography, perhaps I should try to incorporate some bigger picture concepts. My most recent short stories have dealt with the following:
- A Possessed Water Buffalo
- Cocaine Dealing on Sukhumvit Soi 5
- Crazy Guy Tries to Shoot Someone at the US Embassy in Bangkok
- Other Morally Depraved Tales
Kristine Kathryn Rusch suggests you can make a decent 5-figure income a year only by writing short stories. She does a good job of explaining the history of the short story market ever since the 1950s. Nowadays, with many people expecting content for free, I feel that short stories are more of a way to build your brand name than make cash.
If you're interested in submitting some short stories to anthologies, Ralan.com maintains a great list of paying anthologies and exposure-only anthologies that aren't bullshit contest scams.