If you are in good with the meat counter guys, some supermarkets will sell this stuff VERY cheaply. We have large hunks of both suet and lard in the freezer. Lard is tasty for frying anything that will be combined with beans, corn tortillas, or eggs.
Home rendered lard is MUCH tastier than the pure white hydrogenated lard sold in the blue buckets. We just throw some chunks in a skillet, and pour off the melted lard into half pint jars. What's left, I think are called chicharonnes. Very tasty too.
Now I am inspired, we have way too many potatoes. I think I'll dig out some of that beef suet, and make some fries.