I keep a folder to hold good ideas – whether a good idea for marketing collateral, a print advertisement, a company that might be interested in my business offering.
When I attend conferences I always have a pad to take notes but I draw a line down the page reserving a thrid for jotting down ideas as they pop into my head while listening to the speakers.
I periodically go through the folder to sling out those ideas that a few weeks later are not quite so relevant or which don’t seem so good BUT I also take out one or two items to action. There is no point in having good ideas if you lose track of them and there is also no point in a good idea if it lies buried in a folder going nowhere fast.