Just remembered some common #Cantonese nicknames for #HongKongDollar amounts:
$1: 一蚊 (mosquito)
$10: 一條 (stick) / 一草 (straw)
$100: 一嚿 (lump)
$1,000: 一叉 (fork)
$10,000: 一皮 (leather) / 一餅 (pie)
$1,000,000: 一球 (ball)
Common nicknames for HK$ bank notes:
$10: 青蟹 (green crab) / 花蟹 (flowery crab)
$100: 紅衫魚 (red snapper)
$500: 大牛 (big bull)
$1,000: 金牛 (golden bull)
And coins:
5¢ coins: 斗零 (weight equivalent to 1.36g/0.048oz)
10¢ and 20¢ coins: 辰砂 (cinnabar)