To ka joins nouns, verbs (clauses), or adjectives in order to indicate several representative items from a much larger possible listing: "among other things, such things as."
NOTE: When used with nouns, to ka has the same meaning as ya, but is more informal.
Kinō depāto de, sētā to ka kutsu to ka o katta.
Yesterday I bought a sweater, shoes, and some other things at the department store.
Yasumi ni wa jogingu o suru to ka, tenisu o suru to ka shite imasu.
When I'm off work, I do things like jogging and playing tennis.
To ka can be used after pairs of words of opposite meaning, which indicates uncertainty.
Kawaguchi-san wa, ano ginkō ni tsutomeru to ka tsutomenai to ka itte imashita ga, dō narimashita ka.
Kawaguchi was saying that he'd work for that bank and then that he wouldn't. Whatever happened?
Ano hito wa sono toki ni yotte, shigoto ga omoshiroi to ka omoshirokunai to ka iu no de, dochira na no ka wakarimasen.
Depending on which day it is, she says she likes her work or she doesn't like it, so I don't know whether she does or not.
Next we shall cover the particle nado・など, hope this was helpful, and see you next time!
°˖ ✧◝(○ ヮ ○)◜✧˖ ° こゆうきあいはら °˖ ✧◝(○ ヮ ○)◜✧˖ °