A neat feature of the classic BlackBerry devices was the option to change the default currency symbol on the keyboard. Depending on what part of the world you happened to be in, you could set the $ key to type any other symbol.
Unfortunately this feature hasn't made it through to BlackBerry 10 which is a real shame. Especially as the additional currency keys are on the second symbol screen. It can be quite arduous to switch constantly between the numbers keypad and the additional symbols.
Luckily, there's a very simple way to grab a different currency symbol. If you press and hold on the $ key, a popup will appear of the additional symbols. Slide your thumb onto your desired currency and then let go. This means that you don't have to switch back and forth whenever you want to use a different currency.
As an added bonus, this also works on the Q10 and Q5 phones as well as the Z10 virtual keyboard. It's not quite as useful as simply setting your favourite currency, but it's much quicker than drilling through the symbols screens.