Everyone is different and each and everyone of us carries around a moderate amount of tech everywhere we go. I for one eschew carrying my laptop around everyday, because it can get heavy in my pack, no matter what manufacturers might say. What's the tech that's worth carrying around everywhere?
1. DSLR Camera
I carry my Nikon D200 around everywhere with a 18-200 VR lens. It's a lens that works well in a variety of situations and the 8GB SD card works well to save all of my daily photos. Once you get used to the weight of a DSLR, it's not really an issue carrying it around. I've found that when I carried around a point-and-shoot camera, I'd always want the features of the DSLR. I solved this by packing the D200.
2. Cell Phone
While I don't really use my cell phone all that much, I find that it's a good way to be reached. My phone is always on vibrate. I can't remember the last time I used a ringtone.
3. Garmin Edge 500
I like to track where I go and usually carry around my Garmin Edge 500 GPS. It's no use if you're lost, but it's a handy little device.
I have a total of 3 pencil cases in my pack. One is for ink-based pens, like Sakura Pigmas, fountain pens, and other black pens like Tombow ABTs, and Faber Castells. Another one carries all of my color pens, which are all Tombow ABTs. I like sketching with them. Lastly, I have the pencil case I like taking to class. It's thin and small, and has just a few pens inside of it.
I carry around a variety of notebooks, from Moleskine to Rhodia. I use the Moleskine Color-A-Month to do some daily sketching, while the Rhodia webbie is used as my diary. A Moleskine watercolor book, as well as a small reporter Moleskine are part of my daily arsenal.