Lost car and house keys

I lost a set of keys on Fri 19th Nov or Sat 20th November, The set contained 1 black car key, 3 house keys, a chub key and 2 bike keys. They may have been lost in - a taxi to heuston station - the Dublin Cork train. - Cork station or around cork city center (McDonalds) - Taxi from cork to monkstown/passage west. Any help much appreciated,