What does "Less Than Three <3" mean ??
I've been professionally shooting Macro most of my life, so I'll try and help, but your question is a little vague.
Almost anything small makes a good subject. I've always preferred insects. There's an endless variety and they're not easy to do. The point of Macro photography is to capture an image that most people can't or don't see, because the fine details of the subject are too difficult to see without the aid of a magnifying glass, etc. And, remember, some of the most important things in Macro photography are lighting, focus, and depth of field.
Examples of a few of the millions of subjects are:
Insects
Flowers
Cactus
Coins
Carpet Fibers
Pencil Point
Bird Feathers
Butterfly Wings
Mouse Nose
Cat's Eye
Hairs
Cloth Fibers
Leaves
Etc, etc, etc...........
If you want to really capture good images, get yourself a good camera, good lenses, and good strobes.
Whatever you do, have fun. Always have fun. Macro is extremely satisfying when you know what you're doing.