Robot owners have limited options to physically customize their devices. Most modifications void warranties or require technical expertise.
Design standardized hardware modules that snap onto popular robot models - additional sensors, grippers, or interface panels. Focus on easy installation.
Tech enthusiasts and educators would pay for expansion capabilities. Offer both functional and cosmetic modules.
Start with 3D-printed prototypes for one popular model. Validate demand before investing in manufacturing.
The risk is small market size and robot manufacturers releasing their own proprietary modules.