I just returned from Peru.
I had some problems in security that I'd like you to be aware of before returning from your trip.
I purchased a fossil of a fish at an artesania that was confiscated. Apparently, you are not allowed to take fossils out of the country, so don't waste your money.
Also, I bought several stone replicas and the larger of these were also confiscated because security thought it could be used as a weapon on the plane.
My advice is to not carry on any sourveniers that you purchase in Peru, but to instead check them in your luggage. This was a major ordeal in security.
Happy travels to Peru. I can't wait to go back. Next time I'll be smarter about what I try to bring back with me.