I just built my own stir plate--haven't used it yet, but plan to do so next week. To answer the question above regarding flask sizes, etc.: I'm planning to use a cheap vase that has a flat bottom as the vessel for my starter. It's glass, easily washable/sanitizeable (is that a word?), and...
I've been thinking about putting together some sort of DIY bottle drying system. I think I now have a winner. Something like this seems like it would take up much less storage space than a stand or tree. Good idea!