Yup I too just buy the cheapest ones at Wally World, mostly 4 GB ones. Never had a problem yet. I dedicate 2 cards per camera. Then I change em out for veiwing on my lap top. Trail cams are fun.
I always have a few tools on hand for mounting or getting rid of debris. A Little Fiskars axe and a small Stihl folding hand saw. Fit in the back pack and quad nicely. Have fun.