This is how I hide me from myself:

I am holding a thing

An idea comes to me

My brain shifts its occupation to that idea.

HAND

Do we need Thing for Idea?

BRAIN [preoccupied]

What? No. Put it down.

HAND

Got it! Where does it go?

EYES

Brain's busy, but that spot looks good.

HAND

Ok!

And so Brain carries on, unaware of what has happened to my wallet or keys or whatever.