Nifty little display motor has (3) gears operating a 7-5/8” long pivoting plastic arm that swings to and fro a tad faster than twice a second. Mounted in a 4-3/4” x 3-5/8” x 1-7/8” white plastic box. All you add is a (1) D-cell battery, and something to wave.
Pumps air, too. From Parker, this unused takeout 12VDC double air/gas diaphragm pump draws 100-200mA and can push 28psi or suck 25"/Hg through two sets of 3/16” dia barbs. Long-life and ideal for high-flow and low-noise applications. Measures 3-5/8" x 3" x 1-1/4". Made in USA. Part#D861-22-OZ
Nice little 24VDC, 3-blade muffin fan from Nidec™ draws 70mA and pushes 31cfm. Measures 3-1/8" square with 4mm mounting holes on the corners, and a pair of 13” leads. Manufactured right here in the US of A.