Portable heater suggestions

[ALANSD]

I carry a small electric portable heater, we use as necessary along with the heat strip in my ac unit. Seems to do a good job for its size.( I think its a mighty mite or something like that) I wonder though there are so many newer ones out there, what do you use, and is there a reason to be careful of these things...too much current draw or what?
We set ours up on the stove lid where it sits on a non flammable area.

[Pick]

I usually look at Wal-Mart, HD, or Lowes for those kind of things. They are usually cheaper than the local hardware store.
Most, if not all have a "tip over switch" that turns them off if they get knocked over. I usually leave mine on the carpet, which is relatively safe with the units I have, have not noticed the carpet in front getting hot at all, just a little warm. I never run any type of heater in the Airstream, if it is going to be unattended for more than 15 minutes.

[dwightdi]

I like the small ceramic heaters. They are very reliable. Quality varies and therefore noise from fan. They do not balance them very well so I check the unit in the store before I buy. Like to put them on hard non-flamable surface at mid height and point them toward the bedroom. I have used the oil filled ones. They take up more space and do not have a fan to distribute the heat in the unit. Maybe we should install a ceiling fan. Then we might not need to get haircuts as often.

[Gen Disarray]

I'm a fan of the oil filled heaters, they are quiet and give off heat at a steady rate. I feel like they are pretty safe as well. The one I use does not have a fan of any kind but that has not mattered to this point.

[Tarheel]

we have a ceramic heater that we use when its cool, also turn on the wave 6 propane when you need to knock off the chill in the morning.