Closeup filters, or macro filters as they are sometimes known, are awesome. They're a relatively cheap alternative to a dedicated macro lens, which not only takes up space in your bag and adds weight, but saves you money if macro isn't a big part of what you enjoy to shoot. You can find sets of these closeup filters for as low as $10 at places like amazon and b&h. Theyre so cheap that even if you've never gotten into macro before, this is a nice, cheap way of dipping your toes in to test the waters. Some people spend a buck or two on an app and get some enjoyment out of it for a little while, this could be your photographic equilivent. ;) Keep in mind that these won’t give you a true 1:1 macro experience...