15 Pieces Clear Acrylic Dowel Rods Acrylic Round Rod for DIY Crafts 0.25 x 12 in

Not cheap, but affordable.

These rods are described as being 1/4" diameter (.250"). The ones I received were .233" diameter (almost 20 thousandths small)... (closer to 6mm) and were not suitable for my application so they were returned.