Oooh I wish we had of thought of that, would've worked with our DS too, his name is Ashley (Ash for short) and our surname starts with H... Too bad his middle names is Charles (after my Dad and Grandfather)...

Anyway a couple of ideas that popped into my head:

Girls
- Emily could be Emm
- Gemma could be Gem

Boys
Cameron or Campbell could be Cam
Simon could be Sim
Hamish could be Ham

Hmmm I'm liking this, it's a bit of a brain teaser But I think that's all I've got for now, might pop back later.