Why not see Paris from the backseat of a 2CV as your driver takes you past breathtaking monuments and historical sites? Or for the more active types, there's the two-wheeler tours where you tool around the city's sidewalks on segways. For the truly adventurous, Fat Tire Bike Tours offers guided group bicycle tours around the city, taking you along thoroughways and up narrow streets. All of these offer a great way to see the city.
A couple more original ways to see the city are by floating above it in the (tethered) helium balloon that you can catch over in the 15th arrondissement on the Left Bank; or by taking the beloved Batobus, the city-operated river boat that is like a hop-on, hop-off bus but on water.
For shopping and food excursions, these options are tops: Paroles de Fromagers and Local Food And Wine takes you on walks around neighborhood specialty stores for cheese tastings, chocolate tastings, best boulangerie andpatisserie turns and, of course, walk-throughs of some of Paris' most delightful fresh markets.
A priceless excursion that will help keep your memories safe, is the walk around the city with a professional photographer. Sure, that selfie stick is serviceable and can do the trick. But real photos of you and your loved ones are priceless memories you will cherish forever.