WF - how can I use a custom activity without creating it in a separate Activity Workflow library?

I am trying to accomplish something that seems very simple. I have a Console Application Machine Machine Workflow with a workflow in it. I created a custom job for it. This activity will NEVER be used by ANYONE ABOVE. I just want to use this action for my workflow, but:

• It does not appear in the toolbar.
• I can't drag it from Solution Explorer to the workflow designer.

I absolutely do not want to create a separate Activity State Workflow Workflow library as it just clutters my solution. As I said, I will never use this activity in any other project, so I would like to limit myself to this ... but I just cannot figure out how to get it on the designer! I'm going crazy!?

Here is the action code:

public partial class GameSearchActivity: Activity
{
    public GameSearchActivity()
    {
        InitializeComponent();
    }

    public static DependencyProperty QueryProperty = System.Workflow.ComponentModel.DependencyProperty.Register("Query", typeof(string), typeof(GameSearchActivity));
    [Description("Query")]
    [Category("Dependency Properties")]
    [Browsable(true)]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
    public string Query
    {
        get
        {
            return ((string)(base.GetValue(GameSearchActivity.QueryProperty)));
        }
        set
        {
            base.SetValue(GameSearchActivity.QueryProperty, value);
        }
    }

    public static DependencyProperty ResultsProperty = System.Workflow.ComponentModel.DependencyProperty.Register("Results", typeof(string), typeof(GameSearchActivity));
    [Description("Results")]
    [Category("Dependency Properties")]
    [Browsable(true)]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
    public IEnumerable<Game_GamePlatform> Results
    {
        get
        {
            return ((IEnumerable<Game_GamePlatform>)(base.GetValue(GameSearchActivity.ResultsProperty)));
        }
        set
        {
            base.SetValue(GameSearchActivity.ResultsProperty, value);
        }
    }

    protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
    {
        IDataService ds = executionContext.GetService<IDataService>();
        Results = ds.SearchGames(Query);

        return ActivityExecutionStatus.Closed;
    }
}

      

        
        
        
      

    

Thank.

EDIT:

OK, so I found that if I change the project type from Console Application to Class Library, the custom activity appears in the toolbar. However, this is not acceptable. It must be a console / Windows application.

Does anyone know about this?