とか indicates listing and enumeration
This usage is for listing specific things or lining up different things.
Japanese
週末には読書とか映画鑑賞とかを楽しんでいます。
English
Informal or Formal
Informal
Formal
Spoken or Written language
Spoken
Written
※ My personal impressions are quantified and may vary from person to person.
とか indicates vague enumeration
Japanese
この街には、カフェとかレストランとかたくさんあります。
English
とか indicates usage as a conjunction
Japanese
今度の休みに海にいくとかどうですか?
English