This will remove the temptation to climb up on tables and break your best china or injure himself. Pack away precious breakables. Your cat may jump on furniture and accidentally knock over fragile items. Unplug dangling electrical cords or tack them down. Your cat may try to chew on cords, so it is best not to risk electric shock.
Cats love to explore, especially dark, quiet places.
Check inside any large appliance before closing the door. Keep screen doors and windows latched. With a little push on an unlatched door, your cat could slip outside unnoticed. Attach an identification tag and a small bell on your cat's collar. Bones are dangerous, especially soft bones such as fish.