In reply to specticlay:
There is the Link boulder at the top of the ski road,obvious on the left about 4 mins walk.
The Cuca Boulder in Aviemore is a bit sh!t.
The Ruthven Boulder is excellent slightly further North.
Brin is also very good but best avoided this time of year with midges and vegetation.All these are detailed in John Watson's guide "Bouldering in Scotland."
There is also Laggan,developed by Gaz Marshall,reputedly excellent but I havn't been yet.I think there are topos to here floating around online.
HTH