One on my favorite things to do in Paris that does not involve eating is going out to the outskirts of Paris to the largest flea market I have ever visited. It is the mother of all flea markets. Open Sat-Monday, Puces St. Ouen is one large market. Over 2,000 vendors and rows upon rows of stalls, there is something for everyone. You have to pass by all the leather vendors and vendors selling cheap merchandise.
Years ago we found some antique corkscrews and were on the hunt for more. It was incredible that we found the vendor from before but did not have what we looking for. I did find antique linens and some small things. We did not spend all day there so I can’t wait to go back and see more.