Is there a cement glue?
SAKRETE Concrete Glue is a liquid latex bonding adhesive for bonding new concrete, mortar or gypsum plaster to existing surfaces.
How do you stick paper to clay?
Brush a thin layer of translucent liquid polymer clay onto raw polymer clay to stick any type of material to the unbaked clay, including gems, paper, yarn, beads, wood or metal. Spread it evenly on the two surfaces you are joining and rub gently with your fingertip to make the liquid clay tacky.
How do you glue plastic to clay?
Generally, only specialty glues are sure to stick to plastic. Hot glue and cyanoacrylate are hit or miss. If you want to mate clay to plastic, I suggest forming it, letting the clay dry, then breaking it off and gluing it back on.