give @s red_shulker_box[minecraft:container=[{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:3},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:4},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:5},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:12},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:13},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:14},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:21},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:22},{item:{components:{"minecraft:fireworks":{flight_duration:3b}},count:64,id:"minecraft:firework_rocket"},slot:23}]]

tellraw @s {"color":"green","text":" +1 ","extra":[{"translate":"block.minecraft.red_shulker_box"}]}
tellraw @s {"color":"green","text":" +9x64 ","extra":[{"translate":"item.minecraft.firework_rocket"}]}
