These textures are from Minimania.

This repo contains only the 24x24 based variants.

They can be used with poppy and are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

http://creativecommons.org/licenses/by-nc-sa/4.0/

To use it simply clone this repository into the texture/blocks/ folder of poppy (untill a more proper method for mods is added...)