Koi pond in an altoids tin DIY 1) cover the outside in your choice of polymer clay and bake it 2)put glue (i used elmers glue) on the bottom and cover with sand. 3.)add in decorations like the plant ( i made this with polymer clay along with the koi, pebbles and lily pads) using a strong craft glue that dries clear. 4.) Lay out the pebbles and koi and carefully pour clear resin over it 5.) Wait untill its about halfway done drying and add lilly pads. Done!