Personally, I've not received material gifts but have received gifts in the way of additional time (an extra half an hour), discounted fees, a couple of free H.J. and once, an incredible home cooked dinner. The generosity were from my regular providers who I respect, treat well and sometimes give unexpected tokens of appreciation which could be something as simple as a small bouquet of flowers or fresh organic fruit. Sometimes, if time permits, I'll even share a really nice bottle of fine red with them before and after a session. Perhaps it's good karma or perhaps I am simply very lucky.
To many of you, this may not sound like "gifts" but it is to me.