According to Paul Ansell, the keys are described as having "a couple of Mercedes keyrings on it, one black and one blue" and "a round wooden key ring with paw prints on it, and a couple of normal keys".

Source: https://www.express.co.uk/news/uk/1734635/nicola-bulley-mercedes-keys-paul-ansell

I’ll bet that the key ring has an imbedded tracking device, to aid the Emu in his appointed duties…

Source: https://www.imao.us/2023/02/welcome-to-imao-as-a-loyal-visitor-you-will-receive-from-your-personal-assistant-the-keys/

Someone else added: "Is the bean on the key ring the same size as on the necklace?"

Source: https://www.thesun.co.uk/fabulous/23368648/bag-tiffany-necklace-cheap-christmas-gift/