Hello internet! I understand the basic principle of EAPs (you apply a potential difference and it moves) but I can't for the life of me find any specific, named EAPs that fit my requirements. If possible could you tell me if you know of an EAP that: Works in a normal environment (air, room temperature, etc...) Doesn't cost the earth Expands (if only by a little bit, say 10%) under a relatively low voltage (that is safe for people). To help you envisage what I'm after imagine a tube that normally has a small diameter, but when a low, safe voltage is applied, expands slightly to have a larger diameter. It would be a bit like reusable heat shrink; apply voltage to make it expand, put it over a bunch of wires for example, remove the voltage and watch as it shrinks tightly over the wires. Then, if you decide it is in the wrong place, you can simply re-apply the voltage, causing it to expand again and allowing you to remove it. Thanks for any insight you can offer!