Two-person bondage
Both partners are partially tied together. For instance, tie your wrist to their wrist – now you both have one hand bound to each other and must navigate with just the free hand each to stimulate or move. Or tie one partner’s leg to the other’s leg (a three-legged-race style but in bed) for some entangled fun. It levels the field because both are constrained. This can lead to a lot of laughing and creativity to actually have sex when literally tied together awkwardly.