Souvenir - means "memory" literally in French. The best souvenirs stimulate your trip memories and remind you of the places you visited while giving you a warm and fuzzy feeling. Sometimes a French souvenir can be edible and therefore fleeting, but powerful at the time of tasting. Buying souvenirs for family and friends back home can prove challenging, but if you keep in mind that it is the thought that counts, then souvenir hunting won't be too taxing. See my favs for this year here:
It is a huge challenge to come up with something thoughtful, masculine and "useful" to show my appreciation, but this past trip I hit upon the perfect Parisien souvenir for a man while visiting one of Paris' institutions, Ryst-Dupeyron Armagnac distillers.