Use flashlights for effect and have a snack under the cover. Include a pillow and some good books. On a tray place various items. Let your child study them closely. Have the child guess which item is missing.
Parents can hammer nails into a piece of wood in a random design, pattern, rows or circles.
The more nails the more creative the child can be. Although this is quite noisey it is a good way to keep them busy while you are cooking dinner. Have your child listen carefully to detect the different sounds made. Using a toy hammer let kids hammer golf tees into a foam block. If the point concerns you on the golf tee they can be made blunter by tapping with a real hammer.