What can you do with an old PDA?

I still have a number of old devices which are for the most part doing nothing whatsoever. So I started to wonder what I could do with them. Especially my Dell Axim x51. It’s a nice device, but I really don’t use it for music anymore, nor do I really use it for anything. It seems a shame to just sell it off as I’m sure I’d regret it. I’d like it to have a reasonable use for it.

So I’m going to have a nose around and see if there’s a way to get some more life out of it.