Muscle Wire - shape memory alloy metal wire (0.3mm)

A miniature linear actuator that has a stroke range of up to 50 mm at a speed of 3 to 5 mm/s. It has a built-in motor and is powered by a voltage of 3 to 6 V

Concentric LACT2-12V-20 Linear Actuator: 2" Stroke, 12V, 0.5"/s

The medium-duty linear actuator can lift loads up to 100 kgf (1000 N) and withstand a static load of up to 450 kgf (4500 N), the nominal extension of the actuator is 10 cm. The power supply voltage is 12 V. This version of the actuator has a built-in potentiometer for reading the position of the actuator or, for example, feedback implementations. Pololu 3612

DC-AC converter, also referred to as an inverter. It converts a constant voltage (DC) of 12 V to an alternating voltage (AC) of 220 V, 380 V or 18 V

A miniature linear actuator that has a stroke range of up to 130 mm at a speed of 3 to 5 mm/s. It has a built-in motor and is powered by a voltage of 3 to 6 V

30 cm nickel-titanium alloy wire with shape memory. When it is in martensitic form, it can be flexed and deformed at will. After applying a current of about 200 mA or heating to 100°C, the wire returns to its original shape. SparkFun COM-11899

Linear solenoid with a nominal operating voltage of 5 V. It allows you to create a linear motion to move elements or control switches and levers. JF-0530B

Concentric LACT4-12V-5 Linear Actuator: 4" Stroke, 12V, 1.7"/s

Mounting Bracket for Concentric LD Linear Actuators