This little 1.5-3VDC motor draws just 15mA no load, which means it's just the ticket for solar-cell applications. At 3VDC it spins approx 600 rpm and stalls at 125mA. Measures 1-1/8" long x 15/16" dia with a 5/16" long x 1/16" dia shaft and 3-1/2" leads.

This tiny servo motor can swing approx 90 degrees in either direction via any of the (3) included servo horns with screws on the 3/16" toothed shaft: a 13/16" long single horn, a 1-5/8" long double horn or the 1-5/8" long double horn with (2) smaller cross horns. Draws between 220 and 650mA at 5VDC, and is rated for 25 oz/in of torque. Measures 7/8" x 1/2" x 1-1/16" deep with a pair of mounting wings with 1/16" bores. Wiring is 5V to red, ground to brown and timing pulses to orange. Use any 1-2ms pulses at 50Hz.

Great for roboticists, too. It's a mighty-mite, this little 6VDC 45 RPM motor with a right-angle gearbox. Draws 13mA, no load, and stalls at 120mA. Output is through (2) double-flattened 1/4" dia x 3/16" long shafts on opposite sides of the white plastic housing, both with 1/16" dia center holes. Measures 1-7/8" x 7/8" overall. Gear ratio is 228:1.

This small reversible DC motor from JEI runs on 3-6VDC. At 6V it draws 350mA no load and stalls at 1.9A. Spins approx 1000 rpm and approx half that at 3V. Great for science fairs, hobbies and any kind of project that needs spinning. Measures 1-3/16" long x 7/8" dia with a 1/4" x 1/16" shaft and tiny contacts for power that you'd best solder.

This small 1-1/2-3VDC reversible hobby motor from Mabuchi draws 25mA no load and stalls at 90mA at 3VDC. Spins at 6900 rpm. Measures 1-3/16" long x 15/16" dia with a 1/4" shaft and a 3/16" dia x 1/8" gear. Power through marked recessed ports on the back.

You pick. The 4.5 VDC gear motor runs from 3-6V, spins 120 rpm, draws 80mA no load and stalls at 800mA. Measures 2-1/8" x 3/4" x 9/16" with a 3/8" x 1/8" flattened right-angle shaft. Rated for 20 oz/in of torque and has a 120:1 gearbox. The right-angle 4.5 VDC gear motor runs from 3-6V, spins 150 rpm, draws 130mA no load and stalls at 1.25A. Measures 1-7/16" x 1" x 1-5/16" in an L-shape with a  3/8" x 1/8" flattened shaft.

Alas, these animal toys are dead. The giraffes, elephants, zebras, boxer-type dogs (who knows?) won't work, but they'll have nice little DC motors inside, plus battery boxes and plastic gearboxes and maybe camshafts, just waiting for someone with a small screwdriver to disassemble them and give the parts and pieces a whole new life, perhaps in a clever science fair project.

This electric can opener is as weak as the old "My dog ate my homework" excuse, so we suggest using it for parts instead of trying to open cans of soup with it. We're talking about a six-way set of meshing gears and arms, a 3VDC 90mA/220mA motor that spins approx 5K (torqued out), and two-piece plastic case. Great for DIYers, hobbyists and small-motor heads.

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.