upd

Code/Inventory/Usable/PickupItem.cs

@@ -0,0 +1,29 @@
+using Sandbox.Gravity;
+using Sasalka;
+
+namespace Sandbox.UI;
+
+[Icon( "skip_next" )]
+public sealed class PickupItem : InteractionButton
+{
+	[Property] public override string Label { get; set; } = "E";
+
+	public override bool Press( IPressable.Event e )
+	{
+		base.Press( e );
+
+		if ( e.Source.Components.TryGet<Dedugan>( out var dedugan ) )
+		{
+			dedugan.Inventory.AddItem( Components.Get<InventoryItem>() );
+			RpcDestroy();
+		}
+
+		return true;
+	}
+
+	[Rpc.Broadcast]
+	void RpcDestroy()
+	{
+		GameObject.Destroy();
+	}
+}