Ok here are a few ideas.
2 mug rugs as in - his n hers
scrap mug rug
calendar mug rug ok maybe the 4 seasons.
House mug rug
fruit mug rug
cartoon character mug rug
inspirational mug rug
desert as in pie etc. not dry land. - mug rug
modern mug rug
scenery mug rug
vase mug rug
How about more suggestions?