I don't and don't see much need, at least from a protection standpoint. The overlay of the screen is glass, and my tablet was heavily used for a few years before I got it, but still has not a single scratch on the screen. You'd need more than the stylus to scratch it.Also do you guys use screen protectors with your tablets?
The only reasons I can think of for a screen protector would be for glare reduction (not a problem for me) or to give a more paper-like drawing surface (also not a problem for me).
An extra stylus or two would be good, as you will lose one sooner or later. I think the LE1600 has one button and an eraser, so you're well off there. I find for Photoshop and Illustrator work the keys I miss most are Alt, Ctrl, Shift and Space Bar.What else should I buy to enhance my experience?
So, I bought a two pack of Fujitsu replacement stylus pens that don't fit all the way in the silo but do have a second button and eraser (which the M1400 pen lacks). That second button gets alternately mapped to Shift or Alt or Space bar, depending on whether it's more useful to lock proportions, copy objects or pan the screen.
Wacom also sells a two-button+eraser stylus that won't fit into the silo but is probably a bit better form factor for drawing than the Fujitsu.
The clip-on keyboard (if sold separately) is pretty handy every once in a while for doing email. Mostly this would be for travel for me, I've got my desktop for day-to-day stuff.
...and all of the standard laptop accessory purchases apply here, depending on how you can balance convenience versus money. Extra battery, carrying
case (sfbags.com makes nice ones) extra power cord (one for bag, one for home) etc, etc...