any problem with them falling over and causing fires?
things like that don't fall over easily:
pl.wikipedia.org/wiki/Znicz
images.google.com/images?client=opera&rls=en&q=znicz&sourceid=opera&ie=UTF-8&oe=UTF-8&um=1&sa=N&tab=wi
unfortunatelly, the older types (thick glass or ceramic, open at the top) are replaced with modern ones (thin glass or even plastic all over, instead of glass and metal),
I really loved the old type, when I was a kid - we were all putting our fingers in it, so the stearin was sticking to the fingers and when it cooled down we had colourful artificial "fingernails")