Hosting a Champagne tasting at home is about small details, not special gear....

https://wiki-room.win/index.php/Champagne_Tasting_at_Home:_What_Should_I_Serve_as_Snacks%3F

Hosting a Champagne tasting at home is about small details, not special gear. Chill bottles to 8–10°C, use tulip-shaped glasses and pour modest tastes