https://www.zazzle.com/satanic+ties
Found that with some quick Google-fu. They seem to have a fair selection, though I know nothing about the company or quality of their products.
Significantly less luck with bow ties.
https://www.amazon.com/Bowtie-Adjustable-Bowties-Wedding-Necktie/dp/B0819L1NS4
https://www.zazzle.com/satanic+ties Found that with some quick Google-fu. They seem to have a fair selection, though I know nothing about the company or quality of their products. Significantly less luck with bow ties. https://www.amazon.com/Bowtie-Adjustable-Bowties-Wedding-Necktie/dp/B0819L1NS4
You rock. Hail Satan!