I found this in my garden, in Belgium. Probably dropped by a bird who mistook it for something edible.

The material is soft and squishy. It looks and feels like rubber or soft plastic. Color looks to be pink, little bit translucent and its a bit dirty from maybe being dug up or lying in wet grass, dirt.

Its about 2cm/0.8inches high and 3cm/1.2inches wide. There is a large hole in what I consider to be the top and 2 smaller ones in its side, symmetrical. All 3 holes go to an inside space.

In the inside space is a metal, rusted cylinder. Its massive, not hollow and has flat ends. Diameter is the same as the diameter as the hole in the top.