The famous double galaxy of Ursa Maior is an easy target with any kind of telescope. The brighter M81 spiralgalaxy can be detected even in the finderscope. Its smaller and fainter companion, the irregular M82 is interesting especially when looking at larger magnification levels, with several clearly detectable dense areas. Looks best when having a FoV of at least 1°, as in that case both of the galaxies can be fit into one picture. The nearby NGC 3077 is also worth a look, although it's even smaller and fainter than the M82.