or something
Expresses uncertainty or approximation by offering an example or alternative, meaning 'or something (like that)'.
Use か何か when you are not sure about the exact thing, but you can guess or give a rough example. It's like saying 'or something' in English. For example, if you see a box on the table and you think it might be a present, you could say 'プレゼントか何か' meaning 'a present or something'.
It often follows a single noun, but can also follow a verb or adjective phrase to suggest an action or state that is not precise. For instance, '映画を見るか何かしよう' means 'let's do something like watching a movie or something'. This pattern softens your statement, making it less definite.
Be aware that it's used in casual conversation and not in formal writing. It's a handy way to sound natural when you are not exactly sure or when you want to be vague.