There are several "linear" objects that we can see in a single day. A pencil, for example - or even your body when standing straight up.
"Bent" geometries are a bit harder to find. I noticed that my lamp, which has adjustable joints, can form a stick-and-ball model of a "bent" molecular geometry.
One of the most difficult to find, in my opinion, would definitely have been the "trigonal pyramidal." I noticed that a foldable stool illustrates the idea of three bonds and one lone pair quite nicely.
If you go driving, you may notice a Mercedes on the streets. This is where I found an example of the "trigonal planar" geometry. The logo itself is drawn via connecting the vertices of a triangle inscribed in a circle.
Finally, a "tetrahedrally" shaped item can be easily located by any photographer. One of their main tools, the tripod, forms this shape almost perfectly. In fact, when the tripod is un-extended, it could fall under the trigonal pyramidal category.
Attributions:
Linear Geometry Picture:
http://toxicopoeia.com/main/pics/3d_structure_linear.jpg
Pencil:
http://www.wpclipart.com/education/supplies/pencils/pencils_2/wooden_pencil_horizontal.png
Bent Geometry Picture:
http://0.tqn.com/d/chemistry/1/0/8/u/bentgeometry.jpg
Lamp:
http://www.potterybarn.com/products/newbury-halo-task-floor-lamp/?pkey=e%7Clamp%7C86%7Cbest%7C0%7C1%7C24%7C%7C16&cm_src=PRODUCTSEARCH||NoFacet-_-NoFacet-_-NoMerchRules-_-
Trigonal Pyramidal Picture:
http://img.freebase.com/api/trans/image_thumb/m/02fj9jd?errorid=%2Ffreebase%2Fno_image_png&maxheight=200&mode=fit&maxwidth=150
Foldable stool:
http://image.made-in-china.com/2f0j00TutEzhQqjaJk/Aluminium-Foldable-Stool-with-3-Legs-DD2013-.jpg
Trigonal Planar Picture:
http://0.tqn.com/d/chemistry/1/0/6/u/trigonalplanargeometry.jpg
Mercedes Logo:
http://www.smartphotoshop.com/images/merc_14.jpg
Tetrahedral Picture:
http://0.tqn.com/d/chemistry/1/0/B/u/tetrahedralgeometry.jpg
Tripod:
http://www.tnsdistribution.com/aerlingus/ftpimages/large/12.jpg
