I'm waiting on delivery of a GF1 and 20mm lens, and now I'm trying to work out what is essential to day-to-day use of the camera, without getting bogged down with endless bits that detract from it's use. So far... I'm looking at cases. I was a bit iffy about half-cases, but I've seen some reasonably nice ones on Ebay, one even has the top part, which means I can forgo a proper camera bag, and just drop it in whatever bag I carry (and lessen the amount of carrying items... last time I went on holiday, I had a backpack, a side-bag for the camera, an attached bag to that, with another lens in... it was a nightmare!) After cases, it all goes fuzzy. There's lots of "would be nice to have" items, but I'm not sure what should be classed as essential, so that's why I'm here... hoping for advice! The things I was looking at, was a polarising filter and/or UV filter to protect the lens (46mm? does brand name matter?), some form of OVF (Helios or the Olympus one), some kind of strap (I've read the strap posts, and I'm still lost of what to look for, especially in the UK, I'd definitely need a sling style, but can't craft to save my life or I'd make one), even things like thumb-up grips that slot into the hot-shoe (and looks like an old winder!) So... what is essential? What is going to sit in a bag/drawer for years on end?