NOTE: Startupizer 2.0 is now available on the Mac App Store - see http://itunes.apple.com/us/app/startupizer-2/id506070549?ls=1&mt=12!
Startupizer Lite is advanced, yet simple to use login items handler. It greatly enchances login items from your account settings in Mac OS X System Preferences. You can choose among several criteria which determine whether and when a specific item should be started. This can dramatically reduce the ammount of time required for your computer to wake up and allow you to be more productive!
TIME BASED CRITERIA
Time based criteria allows you to select days within week and times within days at which the items should only be started.
MODIFIER KEY CRITERIA
You can assign up to four modifier keys and specify whether an item should be started based on the assigned key being pressed or not. This gives you fine granularity over the startup process.
To get even more, check full version of Startupizer - just search for Startupizer in the Mac App Store!