Yeah. I'm thinking if I do get one I might just get the Sport. I can't help thinking there will be a big leap between first and second generation devices. I don't fancy investing a lot in a device I will want to sell in 11 months time.
I recommend you try to make it exciting, perhaps a different location each day. "Here's one I did at work. Here's one on holiday. Here's one on top of my neighbour's car." Stuff like that. Otherwise it could quickly become boring.