There is another thread about replacing a so-called euro plug, to which I can't contribute as I don't have access to the DIY forum.
However, keeping things light...I love those 2 pin beauties! Yes, you can get rewireable ones, but of course they normally come moulded-on. Also, as previously pointed out, they come with different pin spacings, but it can be fun trying to get a match. However, my favourite thing is that they are "plugs"! Not "plug-tops" as they don't have a top...or a bottom. Thus, no need for endless arguments as to terminology.