Dogs will chew just about anything but some really common targets that should always be kept out of harms way are:
Their natural scavenging will make them target food wherever it is left hanging around so all food needs to be put securely away: don’t leave snacks on tables or counter tops when you leave the room because they will attempt to get at them. Their acrobatic abilities would surprise you when it comes to food at stake, put all food into containers or the pantry. Always wash up your dirty plates and remove all food scraps to a secure place!