This has been posted in another thread, but may be useful to have it here (I just re-discovered it):
Not sure if this has been posted:
(Lots of fun ones there; no specifically Welsh ones yn anffodus).
Well there is this fellow 
and his friend 
And for complete(?)ness:
(Although, bear in mind, as it says there:
Remember that bbcode tags are implemented to varying degrees and that with many variations. None of this represents strict standards.
(Don’t think [color] is implemented here for example, but I haven’t tried everything). )
EDIT: here is a link to Stu’s post about where to find the dragon emoticons: