Just use some from your current stash to put in your change bag, thats what I do, I just take them out and put different ones in every week or so so that I dont have 'nice' nappies sat in the bag.
Id never, ever touch one because of the potential ethical issues but I havent told you not to buy them...just make sure you are aware of the fact that they may well be produced unethically and with potentially sub standard materials to get the finished product price so low.
If you are going to go for one Id suggest Minkee, cotton often wicks so minkee is a safer bet.
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