Ouch!
Coffee pot and toaster, both high amp. draws, see my post on the compressor application for an inverter, just a few minutes ago.
You would have to have a large one, with all that is necessary for a safe operating system, quite expensive.
I would recommend the old percolator coffee method, or boiling water, then just pour it into the modern drip coffee maker we all have. As for the toaster, maybe the A-frame camping style over your propane burner.
Check out (Google it) 'The 12 Volt side of life One and Two' I think Glenn also has a good battery-inverter site here somewhere.
Good luck, Ozz
'07 3400RL 2nd RTU
2 Golf Cart batteries 3,000 watt inverter, automatic transfer switch
Honda 2000 Generator, Maytag's with 220 Dryer
Stationary domed Sat. dish, LCD 12 Volt Amp gauge, LCD Tank Monitor
3 added 120 volt outlets, On Board Air; 12 Volt Viair 450C compressor
2006 Ford PSD 4x4 Off Road Lariat, Hadley Air Horns, Truck inverter with 110 volts: laptop, Color Backup camera, Firestone air bags,Husky air ride roller hitch, Awning lock