ChadRex
TVWBB Super Fan
I love the outside of the box suggestion, now you have my cerebral wheels spinning.Maybe something like this:
Elkay 1-1/2 in. Stainless Steel Kitchen Sink Faucet Hole Cover LK125R - The Home Depot
The Elkay 1-1/2 in. Stainless Steel Kitchen Sink Faucet Hole Cover is constructed with durable stainless steel and features a rust-resistant finish. It can be used to cover unnecessary faucet holes. Thiswww.homedepot.com
The hole is aprox 15/16's at the widest part and narrows to about 1/4 inch , images below including over ripe banana for scale.