Easy to do! It works great.
Btw sorry for not posting instructables lately ;)
Step 1: What You Need
1. A toilet paper roll.
2. 2 Cups
4. A device that can play music through speakers
Step 2: Cutting Into Roll
I bent the paper roll to do a good center cut.
(Look at all images)
Step 3: Time to Put on Cups!
I used a pencil to mark where to cut. You can use a marker or anything
Step 4: Cutting!
I use a pencil to mark where to cut. I did what i did with the paper roll, i squeezed it and made a center cut.
And then just cut a circle.
Step 5: Done!
Sorry if its not detailed, comment below if you need help!
You may need to rotate the paper roller in order for it to stand without falling back/forward