The All-Holiday Crimefic Challenge is open to all characters and pairings in all crime fandoms. The only rule is that fics must revolve around a holiday -- any holiday -- in any culture/country/nationality. So send Jack home with Samantha to meet her mother over Thanksgiving. Send Jimmy to a fire started by a Fourth of July firecracker. Let Warrick take Catherine's daughter trick-or-treating. Anything goes, as long as there's a holiday involved.