Nominalisation
Also see Nominalise sub-sentence. 何か = something, anything 誰か = somebody, anybody どこか = some place, somewhere etc.
どこか遠くに行く Going somewhere far away
nounか何か
noun か 何か is a very common pattern
多分酔っ払いか何かに壊されたんだ。 It was probably broken by a drunk or something.
これって何が最新モデルかなんか。 Is this like a new model type or something?
あそこに行ける道具か何かが見つかるかもしれないだろう Maybe we can find a tool or something that can make us able to go there?