I have an old plugin that I used for my own wedding gift list. It still seems to work (3.0-svn trunk), so you could give it a go, or provide some requests and I’ll have a go at updating it. You can see it at:
https://dessicated.org/matt/?p=1
and download the code from:
https://dessicated.org/iweb/wishlister-1_9_0.zip
It needs, at the very least, some documentation.
Matt.
