The Nurturer tells the GPs to place matches (let's say) on, under, in front of, behind, beside, in the stationary object (say, a toy sofa or clock).
Materials to gather
Pick an object that has a natural front and back. A ball is a poor choice, as it has no natural front or back. A toy sofa is a good choice, as is a clock. It should be an object that has space underneath it. Also bring a box or bag of small objects such as matches or candies.