Faux Dixie Cup

Let's say you have an old timey Dixie cup holder, but you aren't going to use it for Dixie cups. Maybe you want to put lights inside of it. You might be tempted to use a regular Dixie cup to hold the power supply for those lights - but you'll be disappointed. Those holders are designed to release a regular Dixie cup easily, and it will just fall out with the added weight. Sure, you could put a few cups in and it would likely hold the power supply. Instead, use this cup (not guaranteed to fit all holders).

If your Dixie cup holder is about 2.25" diameter (58mm) on the inside, has 4 prong positions that hold the cups, you are probably in luck and this may work.

Basic process is to print the holder, take a Dixie cup of your choice, and glue it (I use superglue, but whatever works for you probably will work. If there's a heavy wax coating on the cup you might want to wipe the inside with acetone before gluing.