The toast: Here’s to concluding the contract today.
Everybody is holding a glass, and inside there is millet; a cloth lies over the top so no flies get in (here’s to). Everyone is fully concentrated, looking for the clue in the thing (concluding).
Then everybody sits down in an armchair with a jar of jam on it whose label shows a tractor (the contract). Behind the tractor hangs a trailer carrying the cloth with the date, the elephant and the hedgehog (today) – an image you already know from sentence 5.