How do you turn the new screen elements on and off using the keyboard? How about the not-so-new ones? See this table:

Element
On
Off
Toggle

Advanced Render Settings
RPPREF
RPPREFCLOSE
 

Clean Screen
CLEANSCREENON
CLEANSCREENOFF
Ctrl+0

Command line
COMMANDLINE
COMMANDLINEHIDE
Ctrl+9

dbConnect
DBCONNECT
DBCCLOSE
Ctrl+6

DesignCenter
ADCENTER
ADCCLOSE
Ctrl+2

Layer palette
LAYER
LAYERCLOSE
 

Lights
LIGHTLIST
LIGHTLISTCLOSE
 

Markup Set Manager
MARKUP
MARKUPCLOSE
Ctrl+7

Materials
MATERIALS
MATERIALSCLOSE
 

Menu bar
MENUBAR 1
MENUBAR 0
 

NavCube
NAVCUBEDISPLAY 1
NAVCUBEDISPLAY 0
 

Properties palette
PROPERTIES
PROPERTIESCLOSE
Ctrl+1

Quick calc
QUICKCALC
QCCLOSE
Ctrl+8

Ribbon
RIBBON
RIBBONCLOSE
 

Rollover tool tips
ROLLOVERTIPS 1
ROLLOVERTIPS 0
 

Sheet Set Manager
SHEETSET
SHEETSETHIDE
Ctrl+4

Status bar
STATUSBAR 1
STATUSBAR 0
 

Status bar
tray icons
TRAYICONS 1
TRAYICONS [...]

More simple AutoCAD tips, as promised:

If you erase some objects, draw a few things and then want your erased objects back without losing the things you drew in the meantime, enter OOPS rather than undoing the commands.
At any Select objects: prompt, you can select using a triangle, non-orthogonal rectangle or other odd shapes, by entering [...]

As my forced change to a different blog theme (thanks IE7) has meant the demise of my random AutoCAD tip feature, you may as well have the tips in a blog post instead. Here are the first five. These are fairly simple tips that apply to all recent releases. You probably know most of them, [...]

If you are thinking of putting yourself or your company out there with your own domain name (e.g. cadnauseam.com), there are many, many sites out there that allow you to enter a domain name and see if it’s available. Don’t use them.
Why not? Because some of those sites will then immediately register that domain. You [...]

In AutoCAD, when you have a drawing open and you go to open another, does Open automatically scroll down and highlight your current drawing?

This can be very handy when you’re working your way though a set of drawings. If this isn’t happening for you, here’s how to make it do so.

In Explorer, go to Tools [...]

I have registered the domain name blognauseam.com because:
a) it will stop anybody else grabbing it; and
b) it will make it easier for people to remember the URL if they don’t have me bookmarked.
No changes are required to your bookmarks or links, I just redirected blognauseam.com to blog.cadnauseam.com and will continue to use blog.cadnauseam.com.
That leads me [...]

The top of the blog nauseam page now features a randomly selected AutoCAD tip. There are only a few at the moment, but I will be adding many more as time goes on.