The thing to remember with any camera is what do you actually need, is all the bells and whistles that necessary, do you know what they are and what they do, is it going to be a case of, ok, it will do that, I might use it at some point, but I don't actually have a use for it now.
You must remember, camera manufacturers are in it to make money, so must keep bringing out new stuff to get that money and saying things like the new model is so much better than the last, when the last was once the best thing since sliced bread, ask yourself, is it really just a con to get your money.
For example, my D70 boasted so much, but I use it in the same way I used to use my old film slr, step ups for me are rapid autofocus, although I used to use small apertures and depend on hyperfocal distance for general snap photography. Another step up, is auto advance, well sort of, auto reset it is now as opposed to film transport and the final enhancement is digital capture, although no digital camera can yet beat film. I find I am not using any of the bells and whistles, in fact I have forgotten what there is, yet my camera use consistantly provides good results.
But perhaps people are getting too submerged in technology when it is a camera still works on the original principles, a combination aperture and shutter speed, but if this is all that is needed to be controlled, what is the point of all the other stuff. When it is light capture is done by a system that uses many apertures at many different speeds focusing on many parts of a light sensor, then perhaps it will need advanced electronics to control, but until then I employ the KISS principle My next camera; D70 or D70s or if I was in the market for something flash, a robust camera aimed at the pro market.
But, as to accessories I would recommend, first a tripod, manfrotto or a uni-loc depending on what you envisage. After that, a monopod, similarly, a manfrotto with a quick release platform, in fact, a qr platform head on the tripod as well. After that, an external flash unit. If it is cheap stocking fillers, go for lens protection filters, either skylight or UV, other to that, cable release or transmitter, whatever it uses. Oh and a gadget bag, I use a mixture of Lowepro stuff, bag, photo harness, backpack or whatever depending on what type of photography I am doing. Tamrac are also pretty good, had some of their stuff in past. Oh and one other accessory, get another camera battery, I have six spare for when I am out and about, aside from the camera breaking, nothing stops me except night time.