Here is another idea for some fun and being totally selfish- how about making a clone of yourself. That way, you could get him to do all your work and earn money while you go off and party! That being said, this argument is full of ethical traps and considerations and you would want your clone not to have any emotions for you slacking off all the time.
@Vicki- that is presuming your teleportation machine doesn’t use fuel or CO2 to function. However in the same sense, since you invented it you could make it use black jelly beans as a fuel source (seriously- no one likes black jelly beans, may as well put them to good use :))
A massive robot suit that I could wear and walk around in. I’m not sure yet how it would help others (I’m sure there’s something, maybe getting cats out of trees?) but it would be a lot of fun for me! 🙂