some common ones:
suntec fountain of wealth, call them on how to do ur custom laser
show at night.
posh high class restaurant candlelit dinner.
tatami mat, wine, candles, some fire sparklers at beach
propose at place of 1st meeting or place with very significant to
both of u.
first time we meet is at a basketball court >.>
maybe i can do something like
Marry Me de words with basketball?
and then surronded with 999 rose