Pin and thread type connecting line (think Saga's case board from Alan Wake II)

This is a small idea, but with inspiration from Saga’s case board in the latest Alan Wake game, a pin/thumbtack and thread/yarn type connector would be really cool for brainstorming and mind mapping. Using stickies with tags combined with an ability to draw different colored connecting lines using the pin/thread look and feel, it would give the impression of an old school mindmap where you can either search your tags but also trace your different ideas and pathways.