i tried

src/Menus/DragNDrop/DragNDropUI.gd

@@ -1,6 +1,7 @@
 extends Control
 
 var usedCards = [cards.BARREL,cards.BEAR,cards.EMPTY,cards.EMPTY,cards.EMPTY]
+onready var HBox = $HBoxContainer
 
 enum cards {
 	BANANA,
@@ -14,6 +15,35 @@ enum cards {
 	EMPTY
 }
 
-
+func _ready():
+	update_cards()
+	pass
 
 export var ObjectParent:NodePath
+
+func update_cards():
+	for child in HBox.get_children():
+		child.queue_free()
+	
+	for card in usedCards:
+		var newchild
+		match card:
+			cards.BANANA:
+				newchild=load("res://Objects/Banana/BananaCard.tscn").instance()
+			cards.BARRIERE:
+				newchild=(load("res://Objects/Barriere/BarrierCard.tscn").instance())
+			cards.BARREL:
+				newchild=(load("res://Objects/Barrel/BarrelCard.tscn").instance())
+			cards.TORCH:
+				newchild=(load("res://Objects/Torch/TorchCard.tscn").instance())
+			cards.BEAR:
+				newchild=(load("res://Objects/Traps/Bear/BearCard.tscn").instance())
+			cards.FLAME:
+				newchild=(load("res://Objects/Traps/Flame/FlameCard.tscn").instance())
+			cards.SPIKE:
+				newchild=(load("res://Objects/Traps/Spike/SpikeCard.tscn").instance())
+			cards.SLIME:
+				newchild=(load("res://Objects/Slime/SlimeCard.tscn").instance())
+		if(newchild!=null):
+			HBox.add_child(newchild)
+