Our knowledge about chemical abundances and the evolutionary histories of the more luminous dwarf spheroidal (dSph) galaxies is constantly growing. However, very little is known about the enrichment of the ultra-faint systems that are discovered in large numbers in sky surveys.  Recent data indicate that these galaxies are predominantly metal poor. On the other hand, the most recent high-resolution abundance analyses indicate that some of these galaxies experienced highly inhomogeneous chemical enrichment, where star formation proceeds locally on the smallest scales. In this talk, I will review the presently available chemical abundance information of the (ultra-) faint Milky satellite dSphs and a few globular clusters in the outer halo. Moreover, some of the most peculiar element and inhomogeneous enrichment patterns will be discussed and related to the question of to what extent the faintest dSph candidates  and outer halo globular clusters could have contributed to the metal poor Galactic halo.