I got mine through my local SEAT dealer.
It's as well to take the old ones in to compare if you have them, as the number of different sized and shaped bungs/drain plugs in a Toledo is quite surprising and the etka diagrams/parts listings are not very clear.
Odds are they will have to be ordered in but they are relatively inexpensive.
I've just had a look through my receipt pile and can't find the relevant part numbers unfortunately.