One of the favorite pieces of lab gear floating around LikoLab these days is the 30X21MM Jewelers loop. These small hand held magnifying glasses are handy with a phone camera and cost less than $5. We just hold the loop in front of the lens for a photo.
You do need to get close to your subject, but can obtain surprising results. We have also found video, or even slow motion video comes in handy from time to time. We use them in the lab to 'officially' inspect prototypes, textile samples, and small odds and ends - but they get more use as a macro kit for phones.