은 거 하다

do the sort of thing that...

Fills the object slot with a description instead of a name. Four lines here are 같은 거 하다, 'do something like X': 왕 분장 같은 거 한 적은 없어? 'have you ever done anything like dressing up as a king?', 조언 같은 거 해주시고. Three more are 하고 싶은 거 하다, 'do what you want to do' — 그냥 하고 싶은 거 하세요 — which is close to a set phrase of encouragement. The 거 keeps things deliberately vague.