～たり～たりする
This is used to mention exemplars, implying that other things are left unsaid.
(activity A) たり (activity B) たりする
do such things as A and B
To get the たり form of a predicate, you just add り to the past tense short form of a predicate. For example, する becomes したり, and たべる becomes たべたり.
おおさかでかいものをしたり、かんこくりょうりをたべたりします。
In Osaka, I will do such things as shopping and eating Korean dishes.
おどったり、おんがくをきいたりするのがすきです。
I like dancing, listening to music, and so forth.