I only need a couple pinned to the taskbar, this one
(Object Dock Plus 2.0) handles most of them.
It can autostart, but one of the extensions I use (stack docklet) doesn't work properly when it does for some reason, so I just pin it to the taskbar and start it when my PC starts.
Auto-hides off-screen at the top, and has all my shortcuts in it. Unclutters the desktop, and the taskbar :3
If you're interested I can post a screenshot of it.