Campfire and Marshmallow sensory trays 

There are two options 
Deep 18mm Campfire sensory tray (Approx 25cm) with a pair of marshmallow sensory tray sticks 
Trofast fitting Campfire (6mm standard depth sensory tray) with a single marshmallow sensory stick, which slots into the hole on the tray
This one sits perfectly on the large trofast tray (40x30) end to end

You get a 3mm solid base, and hollow 6mm top layers, which you simply need to glue to the base to create the trays
Please note this also applies to the marshmallows as you may want to paint the base and marshmallows before gluing the 'tray' 3d section on
Any white craft glue works well, here's a link to ours 

Learning Aids, Resources, MDF Craft (perryswoodcraft.com)