Here are some of the places my research and imagination have visited recently:
The world of medieval Pater Noster cords. How do they differ from rosaries? Both are used to count prayers, but rosaries form a loop, while Pater Noster cords hang loose at each end.
(detail from Adoration of the Magi, by Stefan Lochner)
Crystal reliquaries
(14th century reliquary from Florence, Italy)
And St Edburg (also known as St Edburga or St Eadburh)
(stained glass rendering of St Edburg)