I use a tie pin, but I poke it through the band on the back of the wider end where you slip the narrower end through. That way, it serves the purpose of "tie"ing the tie down while avoiding punching holes in the nice silk.
That would have the added benefit of making people wonder "Hey, how does he keep his tie in place?"
Cufflinks yes, lots of the time.
The rest, no.
Cuff links and tie bars-yes. Tie tacks no for the reasons mentioned above. Lapel pins yes but only when placed thru the the faux button hole on the lapel.
I often troll the various thrift shops around and routinely find stuff for under 5.00 all day long.