The Saturnalia Chants are available on a separate page, which may be printed for use in the ritual. This ritual is dedicated to the Gods and may be used for any nonprofit purpose, provided that its source is acknowledged. For this ritual, the image needs to be standing and have legs that can be bound. A traditional Father Christmas or St. Nicholas may work well. There is no traditional image for Consus, so far as I am aware, so use an image compatible with Saturnus and Ops.
Attributes associated with grain are very appropriate.
For binding Saturn's feet. At least one cookie for every participant. Seed corn, Barley, Other Grains Try to use uncracked grains. Cauldron of Local Soil Enough soil to hold all the candles, pushed into it. For the formal sacrifice, Romans wore a toga.