At restaurants in HK, the change you get back is seldom with the smallest number of bills/coins.

Say if the change is $51, you will not get a $50 bill and $1 coin. You will probably get 1 $20 bill, 2 $10 coin, 2 $5 coin and 1 $1 coin. They expect you to leave some tips. And not just the $1 coin.

Have anyone seen similar things in other places?