The very first plugin to style your menu list or page listing items differently. ( i.e. custom icons for each menu! )
Class to show Terms and Conditions to every visitor upon first visit. Visitor can apply (YES) or leave the website.
iPermission set Rule for your admin dashboard. Manage Or Hide widgets, Options, Plugins, and Admin Menu.
Add the advanced rules for your tags.
Change user roles dynamically when customers buy products.