Since your pool noodle will be covered with decorations ... The ornaments should be affixed in a way that allows the centerpiece to sit on its own. Next, insert floral picks into the noodle ...

Upcycle it into a centerpiece, of course. This quick and easy DIY uses a pool noodle, like these available at Dollar Tree, adhered to an old table lamp to create faux floral foam which you can use ...