I designed this big dice flipper/roller after designing many dice towers and wanting to do something else.

Pretty simple assembly, there is a spring that you can glue into place, i found on amazon: 1/2-Inch by 1-1/2-Inch - .041 Diameter https://www.amazon.com/gp/product/B008RG3P7E/ref=ppx_yo_dt_b_asin_title_o09_s01?ie=UTF8&psc=1

Once you get the spring and flipper attached, you can glue the acrylic dome to the top, also found on amazon: 4inch Acrylic Flange Plastic Hemisphere Indoor/Outdoor https://www.amazon.com/gp/product/B01N29BQN6/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&th=1

While the glue is drying for the dome, you can plop the top ring over the dome, just to finish the affect. Not required, just looks really good. I used aquarium glue as i thought it would hold and provide a semisolid connection to allow for some push and pull that the dice may inflict on the dome.

I personally have used mine in 2 D&D campaigns and it really is random. You can one or all of your dice set into the flipper and it will flip them all. Can also be used for multiple different type of games, anything that needs a flipped dice! Like Yahtzee.

Let me know what you think! Did this for fun, but if you find it interesting, drop a like and a comment. Criticism welcome, just don't be too harsh. Still learning design!