I received these coasters as a stocking stuffer over Christmas.  Made by Trintec, they feature four packs of coasters feature airspeed, altitude, attitude and compass, (or in this case the HSI.)

Trintec also features a bunch of other aviation and marine chachki.  Perfect for your friend who spends hours and hours on Microsoft Flight Sim.

I like them and use them at work as I rotate between sips of coffee, water, and espresso from the cafe downstairs.  But I picture these more suited completing a wood paneled den, surrounding bottles of whiskey and tiny boats inside of bottles. They’re at trintec.com.