Heya. So I have a Canon Rebel t3 1100D with a kit lens and a 55-250mm telescopic lens. In the first week of September I'm going to be going on a trip where I'll want to take lots of pictures. This trip will have quite a bit of mist or water spray. In November, I'm going on a different trip and in this trip, blowing sand will be a huge problem for my camera.

I'm wondering which protection from the elements bag or case would be the best for my camera? I've seen quite a few expensive waterproof bags and whatnot, but I don't really want to spend that much money, as I will not be fully submerging my camera into the water, there will just be quite a lot of water mist around (huge waterfall) or blowing sand (desert canyons) with the other trip. I'm sort of stuck and would really appreciate some suggestions. Thanks all!