I use
this one in my car for ashes. It sits right on the console and stays put. It's pretty cheaply made, but works well. It also does not have a rest for the cigar, but I hold on to my cigar when I drive and usually carry my cigar stand with me when I travel. I bought a few of these because of how inexpensive they are. It is not a large ashtray, but the bottom holds plenty of ashes and a couple nubs.