Rabbitbait
Grog-nerd
I like the trinkets chart from the PHB. I generally use an item once every two sessions or so and it always gets the players speculating.
For combat tracking, I use DMMinion on my iPad. There is a pc version as well. Otherwise, I have the conditions page printed out for players and I ordered Gf9's spell cards to assist with quick lookup of players spells at the table.
If you have an iOS device, you can't beat Game Master 5e by Lion's Den, the same folks that brought you Fight Club 5e. The tools and look are perfect, you don't get all the content out of the box, you have to conect to their non-affiliated Dropbox to download it. (Basically, WotC gave them a C&D since it was so accurate, and they found a loophole)