My parents split when I was tiny, then my mom remarried when I was two. Then she and my stepdad split. So, I went to my dad's every third weekend, and to my stepdad's (along with my brother) the following weekend. I always had a room and toys/space for my stuff at my dad's. When he was living in a really tiny space I would go to my grandparents' instead, and he would stay there with me for the weekend. I always had a room there. I didn't keep clothes at either place, but I always had toiletries, toys, books, movies, games, whatever. My dad bought a bike rack so I could bring my bike with me. At my brother's dad's, we shared a room that had nothing in it but a bunkbed. We couldn't keep anything there - I had to bring soap and shampoo, because he only had men's toiletries, like old spice soap or whatever. Any books, toys, movies, games we had to bring with us. Ditto for any snack foods that we liked that he didn't regularly buy. Later on, he decided to make the second bedroom into a computer room, and we had to sleep on the couch/floor in the living room. He would stay up late watching movies, so I was always really tired and never felt comfortable. I begged my mom to stop going there. She finally relented when I was 15 (he wasn't my dad, and there was no custody arrangement. I think she mostly had me go to keep up the farce that he considered himself my dad, which is what he told her). My brother stopped going soon after, when he turned the computer room back into a bedroom for his gf's kids, for when they stayed over, and my brother was still on the couch. The whole arrangement really made us feel like baggage, completely unimportant. I have no relationship with him, haven't spoken to him in years. And despite the fact that I never remember my parents being together, I have a great relationship with my dad and we talk at least a few times a week.