turdamaloo
A collectible item that one owns or wishes to buy, but which does not quite fit in with the main theme of your collection. Something you really like but which is not quite in line with your usual tastes.
"I have the full series of 1970s Britains Deetail toy soldiers, plus a few extra turdamaloos from the 1960s Britains Swoppets range that I picked up on eBay."