In reply to andyjirvin:
Hey.
There's some bouldering but none I would call entirely family friendly if that's what you're thinking. Closest options (assuming you're on the A82) are Glen Croe and the area around Ardlui which has been developed more recently. Further south, Dumbarton has bouldering at every range but commonly cited as 'acquired taste'. it helps to have someone show you around if you haven't been but there's usually a lot of folk there in afternoons/evenings too.
All the Loch Lomond locations have easy bouldering as well as hard but the easier problems tend to be a bit dirty - bring a brush and clean a few if you get there. Glen Croe locations are generally roadside too, so suitable and ideal in that regard which a good spread of problems, and a few really stunning lines.
Midges? All the way... prioritise bright sun, breezy weather - wind is all important which makes more exposed venues ideal - the area about Ardlui is pretty sheltered, east-facing and lots of birch wood. Dumbarton bouldering gets the sea breeze a lot if you're desperate. Midges like low light (evenings) and still weather. So those humid summer evenings bring them right out.
For cragging, Glen Croe (particular Mid Crag) is close to the road, well travelled and friendly with generally good landings and belay stakes on top. Don't even try Ardvorlich sport crag at this time of year; the bracken is horrendous. I've tried; just not pretty.
Otherwise, there are plenty (usually quite bold) slabs around at Loch Sloy, on the east bank of Loch Lomond, higher in Glen Croe.. Have a look at crags down toward and by Inveraray, there are a few big lumps of rock that way too.
And then within the hour (in good traffic) you have Glen Coe....
Kev