I bought some heavy weight, dotted grid cards and they’re really beautiful. But be careful - you don’t want to get precious about them. Part of the appeal is tearing them up when they’re no longer needed, and using as many as it takes to capture an idea.
The Zettelkasten system seeks to save all of the cards and link to each other through a simple, but sometimes convoluted code of links. Its goal is to make all the notes into parts of a large catalogue.
Yours is more like what I'm already doing. I have a stack of wide yellow sticky papers on my desk, where I spend most of my work time. If I have an idea, I write it down on a sticky, stick it to the top-side edge of the table, and forget about it until the time of review. Once I'd transferred the notes to a more permanent storage – a to-do list or the outliner – I fold it and throw it away. (There's something more appealing to me about folding, as opposed to destroying the note.)
Using index cards might work out better for me, 'cause I'd be able to store them in a stack, rather than spread over the edge of the table. Worth looking into. Cheers!
