When I was younger, say 6 or 7, my dad had already had a cell phone for some time now, and had some left over pager in the office of the restraunt he owned.
I discovered that pager and put a battery in it, turned it on and pretened it actually worked...when all it did was tell the time/date/made a beeping noise when I pressed a button.
I just found that pager in the top drawer or an old dresser of mine. It made me happy.