Many practitioners will say that natural items hold enery better than synthetic products such as plastic. Glass is a very good medium for holding energy, in my opinion.
Crystals are very good at holding energy, considering it is natural. Crystal items are great for holding energies, but some of them may be expensive.
It may just prefer on personal preference, but usually more natural items hold energy better.
Everything (humans, plants, animals, objects, etc) basically hold energy inside of it (intrinsical energy). And lets also include the energy that surrounds every objects, which is the intrinsical energy which is viewed as the intrinsical energy being emitted (extraneous energy, also known as the magic term / phenomenon 'aura').
If talking about better or worse, it actually depends.
If observing objects made by various materials, Hexen is right. Materials which are associated with nature contain more effective intrinsical energy, and also emit it intrinsically.
If talking about materials and items that we affect with our own energy in life, it comes to the 'depends'.
We emit energy, manipulate it, send it, and of course that charge things with it. If we charge and item, it can contain more effective intrinsical energy than a material which naturally contains moe effective intrinsical energy.
It all depends on what affects the material / item during life. See this as difference between nature to external affects.
Well, it honestly depends on your own personal energy. My energy will not go into anything besides metal. So you just have to experiment with what u can pit into
With meditation you will learn how to move your own energy better. then you will have a better time projecting it. Don't expect to be a master enchanter anytime soon though. Slow, sure steps.
With me it depends on if the force have blessed what i obtain for my energy.may it be liquid or solid everything has an energy. you can be a supplier or reciever of energy it is the art of the moment that posibly matters for somthing that gives energy one day may take another day.i have a high sensitivety and can feel any slight change in the flux of energy and always hope that i can master this form of high positive energy within us.to be stable is the key part to energy it is hard to master such a force best way is to be a good person and have faith in your own ability.it will come but you must try and learn what the best form of attack is.