My wife got a few sets of Twinmarkers for Christmas. They came in a bag which was very messy, so I made her a holder.

Each holder holds 25 markers and is stackable.

Each hole is 16.5x16.5mm so I'm sure other brands will fit.

You can fit 4 holders on 1 plate (X/P series).

5x2 holder: [https://makerworld.com/en/models/1086805#profileId-1079730](https://makerworld.com/en/models/1086805#profileId-1079730)

5x6 holder: [https://makerworld.com/en/models/1087156#profileId-1080081](https://makerworld.com/en/models/1087156#profileId-1080081)

7x6 holder: [https://makerworld.com/en/models/1086773#profileId-1079705](https://makerworld.com/en/models/1086773#profileId-1079705)

If you would like to print the ‘eco’ version which uses less filament you can print this one from @demon_lemon: [https://makerworld.com/en/models/1417706-marker-holder-5x5-with-meshed-walls#profileId-1472522](https://makerworld.com/en/models/1417706-marker-holder-5x5-with-meshed-walls#profileId-1472522)

Update 06/07/2025

On request of a user I made a lid for the 5x5 holder, you can find it here: [https://makerworld.com/en/models/1580208-marker-holder-lid#profileId-1662945](https://makerworld.com/en/models/1580208-marker-holder-lid#profileId-1662945)