Affordable places to visit in Khobar, Dammam area

Hi guys! Term break is approaching. It will be 2 weeks off school so i'm thinking of making it worthwhile. I'm planning to visit places around Khobar/ Dammam area but without spending much. Your suggestion of affordable places is really appreciated.

You can join internations group. The organizers are usually posting interesting events every weekend. The cost ranges from 50 to 200 SAR.

Thank you so much. I will!