Crystal_creeper asked for this
                              Todomomo
                              Yes, she'll wear a dress that looks like his costume. 
                              Todoroki wears tshirts with her face on it or sm-
                              Kirimina
                              He has work out stuff like water bottles with his colors and stuff on it and she'll use it.
                              She doesn't really have merch other than plushies, but they have plushies that hold hands or sm becuz their cheesy.
                              Miruhawks
                              No
                              Iidamei
                              No
                              Kamijirou
                              No
                              Dabi x Memeaboo
                              No-
                              Dabi x Toga
                              No
                              Nejitama
                              The Big Three all has merch but it's mainly for kids and Tam tam and Neji Neji are always hugging in those.
                              Mt.Kamui
                              Probably already do
                              Ryushot
                              No. They keep their relationship private but everyone knows they're together. 
                              HitoRei
                              No
                              I didn't understand the question very well :/
                                      
                                          
                                   
                                              
                                           
                                               
                                                  