Try an ascent of Tryfan, from above llyn Bochlwyd, following the miners path.
Heather terrace will involve some scrambling, nothing very technical, but if all you want to do is gain the summit of Tryfan, there are easier options available.
Once you reach the wall and style at Bwlch Tryfan, there is a very easy path that takes you to the summit of the mountain off to your left.
This route up Tryfan is by far the safest and quickest way to the summit, and involves virtually no scrambling at all.
If you managed to watch Iolo Williams recent first episode on Snowdonia, he tackled The Gribyn ridge, above llyn Bochlwyd.
This route involves a bit of scrambling to gain the main Glyder plateau, but its never difficult, and the views are magnificent.