Lately I've been practicing some Sub-D modeling. The Polycount thread on that topic was a great resource for recreating various shapes to begin with. Afterwards I started to make whole models; this fire hydrant was the first one. The topology/edgeflow is a bit messy where the main cylinder gets extruded and causes some pinching. But it was sufficient to bake a proper normal map for the low poly. The model is also slightly out of proportions since it's too elongated, espacially at the top.
High Poly / Wireframe in Blender
Textured low poly in Blender (GLSL viewport grab)
Textured low poly + LoD model in UDK
Blendswap Download: http://www.blendswap.com/blends/view/70874
Sketchfab Preview: https://sketchfab.com/show/96ded07b6ac1434b9225531540fe2bda