I like the following domain names:

thefanworks (.com, .org, .net) are all open

fandominium (.com, .org, .net) are also all open

fictorium (.com, .org, .net)

the-multiverse (.org, .net), .com is taken for this one

fenfair (.com, .org, .net) also open. Kinda sounds like "ren fair" but not. Because I have a cheesy sense of humor like that.

thefreeverse (.org .net).

and finally...

fan-fix (.com, .org, .net). The one without the hyphen is taken, but still. I like it.