Maybe You'll Make a Friend
On Call an 800 Number Day, simply find a phone number that starts with eight-zero-zero and call it. It's free to you.
You probably don't own a phone book anymore, so just look online. There are plenty of them out there.
Pick one that looks mildly interesting and punch the number into your cell phone. It's as easy as that.
Maybe you'll only get a prerecorded message or an automated system, but maybe you'll get a real, live human instead. If you do, strike up a conversation with them. Their job is probably really boring. They'll probably appreciate talking about something off-script for a while.
If you're ambitious, call more than one 800 number. Calling one you're not particularly interested in could be fun.
Calling an 800 number and acting like it's for a different service than advertised could really be fun if you do it right. Shades of Candid Camera, ya know?