Its the bacon sarnies and Eggs that intrigue me, Oil, bread, cleaning up, keeping food chilled etc.
For shorter trips, freezing a pack of bacon and popping it into a jiffy bag works very well, it defrosts over the course of the day/evening, and is cool but ready to cook the next morning. TBH, unless it's really hot, that's probably overkill, but I do it anyway. Eggs are OK at room temp anyway, so, again, unless it's hot or your trip is long, you probably need to worry more about them breaking than overheating.
Oil (and washing up liquid) go in small plastic bottles. You don't really need much oil if you choose decent (i.e. not chock full of water) bacon. you'd probably get away with none at all with good bacon and a non-stick pan. Whether that would leave you enough fat to fry an egg, I'm not sure. I usually forego the eggs in favour of more bacon when camping.
I "pre-wash" the bacon pan by pouring in any unused hot water from my last round of coffee, with a little washing up liquid, and popping it on the Trangia to boil up for a bit, scraping the worst of the grunge off as it does so. The resulting "soup" usually gets transferred to the bean pan to loosen any gunge in there too. (My Trangia frying pan and saucepans aren't the non-stick variety).