LOL
the thing with custom nozzles is only the people who use it will know exactly what they want
you will have a design in your head, you might be able to draw it and post it, but how its interpreted by the maker might be slightly different
pop along to B&Q
some waste pipe -- a couple of quid a length
with either :
a mains ( 240 v ) heat gun --- 10 - 15 quid
or a gas blow torch --- 13 quid, i purchased 1 about 2 weeks ago
then cut pipe to length you want it
fill with sand, this helps not melt the pipe
heat pipe and form to shape