The connection, as I see it, is that Pinterest user's primarily interact with the service by "repinning" other content. Only 10% actually add new content from other sites, and would wager a minuscule portion upload new photos from their desktop.
Cricut users express their creativity by cutting out content that was already flowing through the system and expressing their creativity in arranging the cut-outs, much the same way people create Boards on Pinterest.
Cricut users express their creativity by cutting out content that was already flowing through the system and expressing their creativity in arranging the cut-outs, much the same way people create Boards on Pinterest.