Saturday trip to the mall with friend SUGGESTIONS?

i am going with my new friend Cindy to the mall on Saturday afternoon, from like 3-9, and i only have a 50$ budget for BOTH OF US, since her mom won't give her money. my said that she will only give me 50, because "we have a lot of expenses right now". what can we actually end up buying? could you give us some tips? thanks! i am awful at spending money and it would all be spent in 5 minutes if it were up to me.