Hugely popular in times gone by, the days of the ceramic whisky decanter would seem to have passed. Nonetheless, certain of these decanters have remained extremely valuable due to their rarity and/or the quality of the whisky within.
A 20cl decanter of Whyte & Mackay in the shape of a rather perspicacious-looking Merlin (the bird of prey, not the wizard. Unless it's the wizard in the form of a bird of prey, which probably would be possible if wizards actually existed).