I’ve put up a back page on my blog where I can play around with new stuff — called etcetera. There’s a permanent link to it just below the ‘e-mail me’ on the top of the left nav bar.
I’m just starting to put some things up (tag cloud, a swicki and my del.icio.us cloud). If you bump into stuff that looks fun, send me a note about it. I’ll put up some reminder posts as I populate the page with new ideas.