You can put surge protection outlets over the existing outlet. They usually turn 2 outlets to 6, and they have some surge protection built in that can help prevent excess power coming into the appliances at that point. You can also get a home surge protector that can be wired into your house panel to give protection to every circuit right at the breakers.
There is a whole house surge protector from Amazon that is only $86. You have to find space for it on the panel near the main breaker. I think I will have an electrician do it because I hate messing with panels. I would hate to fry in order to keep my appliances from frying.