The first thing I would say is to try and calm down, as I can never find anything when I'm stressed.
Could you have dropped them outside? You wouldn't have heard them if they'd fallen on soft ground.
Have you looked in any bags or anything you brought in with you?
Could your DC have picked them up? Could they be in their coat pocket, hood or sleeve even?
Have you looked behind cushions, throws, etc, under the table, on a chair, sofa, shelf, mantel?
Did you go to the loo when you got in, or go straight upstairs?
I've found mine in the laundry basket, peg bag, shed, fridge and cupboard before now! Also, the letterbox and shapesorter when the DC were young!
They must be at home somewhere, so they will turn up. I quite often find things when I'm looking for something else!
Good luck!