Appliances with heating elements (hair dryer, toaster, etc.) will require a lot more power than other appliances (tv, computer, etc.). With a generator, you should be able to run the heating element appliances (but not necessarily at the same time). Without a generator, you'll be more limited.
I stay at dry campgrounds (no hookups), so I've picked up a lot of boondocking behavior. Since I don't have a generator and don't want one, I only run what I can on propane and/or battery power. No toaster - I grill my bread (lightly butter both sides and grill in pan on stovetop). No hairdryer - I let it dry naturally. Fridge on propane; water heater on propane. No microwave. I may hop on my laptop to watch a movie, etc. I charge my phone each night. I play music with my mp3 player and powered computer speakers. I turn on lights when inside at night as needed. I spend a few hours in bed reading my kindle using a LED puck light. I run a 12v fan as needed as well as vent fans. By the end of 4 days, I haven't even put a dent in my group 31 AGM battery.