I bought the Z1E and I need extra stuff.
I'm thinking about buying the next items:

Libec TH-950DV tripod (350 Euro)
Audio Technica 897 shotgun mic (300 Euro)
Kata Raincover CRC 15 (100 Euro)
Lowepro DryZone 200 Backpack (300 Euro)
(prices in holland)

Is it a good list?
Or should I buy other stuff?
Do I need something extra in the field?

Thanks,
Johan.

I don't know that particular tripod, but the rest of it looks good.
Be sure to get a Sky 1A filter for the front of the glass, don't buy a cheap one, get a good one.
Also consider a polarizer if you're shooting around glass, water, snow, or other highly reflective surface.

I got a Hoya UV(0) filter.
Don't know if it's ok, but I use it for protection of the lens.

You might consider a remote lens controller to use with your tripod, Johan. Several models would work well, including the Canon ZR-1000, VariZoom Rock, and the Zoe.

Bear in mind that the Audio Technica 897 is a nice mic but it is not thick enough to be held using the Z1 mic holder, you will also need to wrap something around the mic to hold it securely.

Simon