Whenever I get the indomitable urge to spend all my money on cool stuff online, specifically clothes, I just go on my pinterest.
I've got a huge board called "fashion" that ive sorted into about like 15 different folders called tops, pants, skirts, makeup, jewelery, and all the like.
so if i have this urge to buy something awesome for myself, i open pinterest, maybe use the search bar to find the specific item or similar ones, and i sort like 15 at a time onto the pinboard as if its my shopping cart. i sometimes then just look at my sorted collection and then decide which items i wanna "keep" and which i'll throw.
for me, it's a great replacement.
im sure you could apply this process to other products, like stationary or accessoiries or furniture and stuff