Have a "recent searches", "search history", or "recently viewed"feature

It would be helpful to have the search bar auto-fill the last few searches to quickly go back to something you were just looking at.

In the same way, maybe have the option for a side bar or something with the search history or "recently viewed" items.

Either (or both) of these would be great when you are at a store or a con, checking sales, prices, or if you can't remember if you have a certain item.  I do this dozens of times, and end up buying a good chunk of what I looked up.  It would be so much easier to find that item again quickly based on I viewed or searched for in the past day or two, and adding it to my collection.