Toolkits allow assigning the need-related tasks in innovation process to the user. Using toolkits for innovation supports to create products which suit the heterogeneous needs. However, the user might suffer information overload when facing different options from the innovation solution space. Moreover, while on the market existing different types of toolkits, many of them merely focus on configuration and customization of predefined solutions. Toolkits for more innovative solutions are expected. This work takes Arduino projects as the concrete research object. In a design science approach, a web application prototype is developed, aiming to match the users’ heterogeneous needs with the broad solution space of innovation, to reduce the user’s information burden and to provide more innovative solutions. Its efficacy is evaluated by conducting a technical review and four rounds of interviews. The results demonstrate the feasibility and efficiency of the prototype to assist user innovation.