Allows you to keep notes about things you'd like to buy in various stores in the future, and pops up reminders when you can afford them.  Press <ctrl-Return> when a store item is selected to add it to your wish list; press <alt-shift-w> (or your preferred key rebound in the usual manner) to manage your wish list.

Also available as part of the ZOmnibus Addon Pack and ZOmnibus Lite.