If Bohemian glass is a must have , try the Artel Design Shop ( Celetna 29 , entrance on Rybna ; 420-224-815-085 ; www.artelglass.com ) , which updates traditional crystal designs with modern colors and shapes , like the asymmetrical " Glacier " bowl by the American designer David Wiseman ( 82,800 koruna ) , and 60s-style " Mod " Champagne flutes ( 5,900 koruna each ) .