Rain protection: I'd rather make one than buy one, but that's just me. How good are you with a sewing machine? If you're handy with one, you might consider fashioning a robust and durable cover out of urethane-coated nylon. Just model yours after some of the hardcore raincovers available on the market. That's what I'm going to be doing for this winter. I'm also going to try including a hood so I can see the back of the camera and a clear plastic window so I can see the top of the camera.
In a pinch you can use a trash bag, but that's not a very durable solution. The price is right though. Once I even duct-taped a clear plastic page protector over the top of my camera and telephoto and that worked nicely for a few days.
But here are a few links you might find useful:
http://fotosharp.com/camera_rain_covers.html
http://www.earthboundlight.com/phototips/camera-rain-
gear.html
And this outfit in Australia makes very high quality rainguards, but they're pricey. Take a look at the basic sports model.
http://www.aquatech.com.au/c--46--sportshields.aspx
This one looks pretty solid, too:
https://www.photoproshop.com/product_info.php/cPath/21/
products_id/397
As far as tripods, can't help you. I've got an el cheapo that I got as a gift. It's served me pretty well, though I don't use it all that often.