Textures in my boxes

I have decided that I will use textures in my boxes that are more unrecognizable than I currently have. As it were the textures I used in my experiment were too obvious and so people could associate them with a tangible item, meaning the colour was based on what the object looks like. If I use more unusual objects, this is less likely to happen.
    I will also look at making my own texture. When I trialed the home made goo, people were unable to recognize it so went purely off touch. I will attempt to do the same with different textures in the future.

An example of how I could beat metal to define my own textures