Strathfillan Wigwams, at tyndrum. Their camping field’s not the best tbh- they’ve put the wigwams in the best places. But it keeps the midges down a bit. Nice wee site, interesting to wander around, campfires allowed, wee shop on site.
Further south, there’s Beinglas Farm just behind the Drover’s Inn which is better on most things but worse on location and midges. They’re still not as bad as the leanachan flying sharks but they are bad. It’s a lovely location though right at the tip of the loch.
There’s a wee camping field at blackwater hostel, at kinlochleven- much closer to fort william (and it’s a great drive along the german road), right on top of brilliant riding up the ciaran path or the dudes of hazard enduro stages… Never actually stayed there though
All of those are on the Way but I don’t know about other riding for the first 2.