Sure thing! I thought I'd wiki linked exactly what they could do in the request; clearly the power of derp was with me there. (Sorry about that!) Here is a description of what it does at the Kamen Rider Wiki. Basically, the Tako Candroid can fly/hover by spinning its tentacles sort of like a helicopter propeller. Together, they're capable of building ramps, bungee cords, or trampolines. Alone, about all they can do is to squirt ink at a potential enemy.

To build them, he'd need robotics manufacturing equipment or a laboratory devoted to the development of such things, along with the necessary material and such for parts. He currently has no way of accessing any of this, so knowing how to build them is more of a frustrating bit of knowledge rather than anything he can actually act upon. (He could maybe mock one up with an Erector set or something, but it wouldn't really function properly.) There's also no way he'd be able to manufacture enough to do the whole road-building/trampoline-forming thing unless he hooked up with someone that had resources that rivaled Kougami's in-canon.