Heres Australian money.
Its very colourful and pretty.
Different sizes aswell you might notice.
The picture doesn't show it, but each of them has a clear window in the corner, with a white symbol on it.
On the $10 note the clear window has a windmill, and when you run your fingers over it, or look at it through the light you can see/feel wavy stripes (like wind).
The $5 note has the window (with a flower in it) but it hasn't got any indents on it.
I haven't got any other notes handy to check, but I think every note has different indents on the plastic window. I think this is for the blind, and to counter fraud.