Fantastic news Laggan Coffee Bothy has re-opened. Lots of info on their facebook page just search Laggan Coffee Bothy. Definitely worth a visit if you are staying in Laggan or just passing through.
The Pottery on the Dalwhinnie road (A889) is also a good place to stop for a coffee and has some very nice gifts although a wee bit pricy!
Last stop for coffee heading west before you hit Lochaber is the Cafe at Wolftrax bike centre. I haven’t been into the cafe for a while but the last time I visited is was great good coffee and tasty cakes.