With a part as easy to replicate as a shifter, I would have spent about 10 minutes, max, to look for it.
How to make it? A piece of stretched sprue or a styrene rod (every modeler should have several packages of styrene rod and strip for detailing purposes) with a ball of thick super glue on top. Or, use a ball-tipped straight pin. There are all kinds of tiny balls around to glue on top if you look hard enough.