What interesting ways could large Mylar balloons be displayed at a wedding venue that won’t allow any adhesives or holes in the walls?

I have some very beautiful Mylar balloons I’m using to decorate at my wedding which is at a historic estate that won’t allow adhesives or holes in walls (tape, putty, command hooks, nails, etc.). I have some balloon stands but am afraid they may be too flimsy or small to support the balloons and am trying to think of other creative ways to display them.

What interesting ways could large Mylar balloons be displayed at a wedding venue that won’t allow any adhesives or holes in the walls?
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