As long as you use, love, and properly care for the equipment that your hobby requires, I think all hobbies can be clutterless, regardless of how much stuff they require.
For my photography I have a lot of equipment (camera bodies, lenses, loads of accessories, lighting equipment, tripods, reflectors, a studio space etc etc) and I use it all. If I chose to give up my studio and be a street photographer, I could probably do very well with just one camera body and one lens; but that's just not my style. I don't consider my abundance of photographic equipment clutter, however, because it's all stuff I use, love, and care for, and it all enables me to pursue my passion.
As for what hobbies one can do without accumulating more stuff, I'd be tempted to say "any hobby you want". One person could do yoga in their living room, wearing their regular clothes and without a mat; another might prefer to have several mats, towels, blocks, straps, special clothes, special bags, books and quick reference guides, subscriptions to yoga magazines and memberships to yoga centres. Does that make yoga a clutterless or a cluttery hobby?
You might think skiing would be a cluttery hobby, since it requires a lot of equipment; but if you choose to rent your gear every time you hit the slopes and not keep any in the house, does that make it clutterless?
Someone mentioned drawing as a clutterless hobby; but depending on how much you like to experiment with different types of paper and different tools (pencil? conte? pastel? ink? charcoal?), you can accumulate stuff quite easily.
Even bird-watching can make you accumulate stuff. If you decide you want to take photos of birds, rather than just watch, you need some pretty sophisticated equipment.
I could keep going, but I think you get the point. Any hobby can be cluttery or clutterless, depending on your outlook and preference. The emphasis I would add is to pick your hobbies according to your passion for them, not according to the number of objects they require.