YES! now is the best time to start a list of what each piece of equipment uses, in terms of fuses, bulbs, other spares etc.
Dont forget spare extension leads, both in case a lead goes down, and also for venues who seem to put the stage at one end of the hall, and the power sockets at the other...
Remember YOU too...spare socks, spare trousers, spare laces... YOU are THE central part of the show, and if carrying a safety pin, is the difference between you walking around with your zipper broken open, or not, then carry one.
Also, Audio leads: Not only differing lengths for different venues, but again, in case of spares.
I would also strongly recommend that you label ANY items which you have two (or more) identical units. For example: My two overhead light screens/floodbanks are identical to look at. If I noticed a problem with one of them during a show, I would have trouble telling it apart from its twin later, when I had time to "open her up". So, I've used Typex/correction fluid to paint a discrete numbering system on everything which I have more than one of. EG: 1 dot, 2 dots, 3 dots and so on.
Spare headphones are a must. Also, a spare microphone - even if its a lower quality that your regular mic, will not only give you a spare in the event of your primary mic failing, but it will also allow you to only "risk" the secondary/cheaper mic, when the host/raffle organiser asks to borrow a mic.
Dont forget either, the tools to effect any replacing of fuses etc. EG: A selection of screwdrivers, A TORCH, spare batteries for the torch (unless its a dynamo torch), CD lens cleaner (check Denon manual for suggested types), a spare fader/crossfader for your mixer, etc,etc. Soldering Iron, if you'll be making that serious a repair, and of course, a modest sized toolbox to carry it all in (not to be left in the van/car boot 500 yards from the stage.
Since you've got full MP3 playability now, you could also consider an "emergency" CD or 250 tracks to "get you by" should anything "hostile" happen to your CD's etc.