All in the 300 - 500 word range.
Title: the photogenic nature of temptation
Rating: PG
Summary: ...in which Spencer Reid is a model.
Title: on the categorization of forbidden pleasures
Rating: NC-17
Summary: "You know how rarely I just offer myself up to a person?" 'For free' hangs in the air between them.
Both of the above can be found
here.
Title: (the lights went out in) georgia
Rating: PG
Summary: Technically, Hotch lost his first agent in Georgia.
The above can be found
here, along with a Criminal Minds/White Collar crossover involving a Spencer/Neal Caffrey pairing.