in form load event:
CheckBox cb = new CheckBox();
cb.Text = "test";
cb.CheckStateChanged += (s, ex) => this.Text = cb.CheckState.ToString();
ToolStripControlHost host = new ToolStripControlHost(cb);
toolStrip1.Items.Insert(0,host);
[edit]Inline code changed to Code block: it preserves the formatting- OriginalGriff[/edit]