1.   My desk was overflowing with (stationary  stationery).

2.   During the (stationary  stationery)  phase, the size of a bacterial colony remains constant.

3.  A (stationary  stationery) battery contributes weight that helps to stabilize a vehicle.

4.  Before sending the letter, she sprayed the (stationary  stationery) with perfume.

5.  The bright new (stationary  stationery) supplies reminded him of grade school.

6.  A seagull soared overhead on (stationary  stationery) wings.

7.   The table saw, also known as a (stationary stationery) circular saw, is permanently mounted on a table. 

8.  Even as costs of living increase, average wages often remain (stationary  stationery).

9.  The museum's (stationary  stationery) bears an embossed image of the Egyptian goddess, Isis. 

10.  Oxygen delivery systems can be portable, (stationary  stationery), or ambulatory.