I am a super power user. My boys think I'm crazy. I have tons of gadgets to use with my Note 3 and Note 4. Yes, I use both Not 3 and Note. I have my Note 3 running Police Scanner, or Capital Public Radio, Pandora, Audio Bible, still play games, check Facebook, E-mail (I keep complete copy of E-mail on both Note 3 and Note 4).
I use my 23-inch monitor for both Note 3/4. Some of my gadgets include: Logitech Bluetooth Keyboard (full size), Favi Mini Bluetooth Keyboard, Rii (white model) Mini Bluetooth Keyboard, Bludio Bluetooth Headphones, Samsung Earbuds, LuguLake Bluetooth Speakers (one set of blue, one silver), 1TB Samsung Harddrive, ZeroLemon 10000mAh Extended Battery (Note 3), Black Flipcase Note 3, Frost White Flip Case Note 4, RavPower 13000mAh Battery Pack, RavPower 14000mAh Battery Pack, Lots of USB Thumb Drives, tons of SDHC Memory cards (both regular size and micro), Macally Bluetooth Mouse, Kingston Card Reader, Mini Card Reader (one for Note 3, another for Note 4, they have different USB ports).