These weighted ashtrays were very popular from 60's to 70's. Were often used in cars because the built-in ashtrays were generally put below the A/c and heat vent which would blow ashes all over when on. Generally made of aluminum.
You can still buy them today. Popular in the RV industry.
These "antlers" were used to hold the cigarette from rolling while walking or driving and were also used to knock the fire off cigars so they could be smoked later.
These don't garner much value. From $2.00 to $5