Something fell off last night, metallic rattling sound under the bonnet whilst driving then heard it rattle out and bounce off down the road lol.  Now when I take my foot off the accelerator there’s a very loud clunk coming from what sounds like front centre area.  Went back along the road to try and find whatever jumped ship but it’s gone.  I know it’s a long shot people, but any ideas where to start looking ive only got axle stands no access to a lift.  
Thanks