とか

Etymology 1
Case-marking particle plus adverbial particle

Particle

 * 1) something like, some kind of; where the situation is unclear

Etymology 2
Parallel marking particle (used to join two words together in the same way as ) plus adverbial particle

Particle

 * 1) such as, and so on; used when listing something part of a larger group of similar things
 * 2) or something, used to avoid stating something clearly and add vagueness

Usage notes
This is not a true particle but is a compound of two particles which is used idiomatically.