One of my favorite new-ish shops in the Marais is Fleux. Fleux is all about design but at relatively affordable prices.
I recently bought a sleek new dish drying rack there, and last year I purchased the shelf and animal figure coat hooks for my entryway pictured below.
You can find the three Fleux boutiques (all on the same block) at:
39 + 52 rue Sainte-Croix de la Bretonnerie
You can also order online, and for international delivery too (!!), but even delivery within France will cost you the normal post office (Chronopost) rates….