Holder for 5-10 Markers
There are two models: for 5 markers or for 10 markers
This one is designed for the Cricut brand but is compatible with most models.
You need :
1x insert-empty
inserts are here : https://makerworld.com/en/models/22521#profileId-27457
Optional:
For a better result, you can apply an adaptive layer to the top of the holder.
If you want to know more about this subject, here's a tutorial video :