That's a question I've been thinking about as well, mostly for photography. My tripod is crazy expensive, so I'm pretty cautious about it. I'd be a lot less worried about a mic stand. Here is one example...
I have a lowepro backpack for photo gear. It has provisions for carrying a tripod vertically. Basically, there is a pocket that flips open, exposing a pouch. The head of the tripod generally goes in there. And then there are adjustable elastic cords, with snap clips, on the top and bottom of the pack that wrap around the tripod.
It works reasonably well for carring a tripod, though it is optimized for walking, not being hunched over on a bike (since larger tripods will be at head level or higher). My tripod is larger than the pack is intended to carry, so the combo is a bit much..
You might hit a high end photo store to see what they've got. You might adapt something like that to another bag. Ultimately, you just need a solution to bear the weight of the tripod and transfer it to the pack in a reliable way. That could be a piece of webbing that wraps around the head, etc. Once you've got that, you just need to keep the tripod centered on the pack.
I've been at shows that allowed recording, but would not allow carabiners. So keep that in mind..