OK - so the title I have given this review is (and was meant to be) tongue-in-cheek, because restraining a rampant marsupial is - I should think - probably one of the very few things for which these Velcro ties are totally unsuitable!
Realistically, the potential list of uses is endless. Most people will (very sensibly) use this product for tidying the spaghetti-like muddle of cables that most modern electrical appliances seem to spawn. I actually cut a couple of lengths of this 10mm wide Velcro strip to provide some extra support to the quick-release clips on my detachable camera strap: I'm not sure whether they actually need it, but it does provide a little extra reassurance against the strap unexpectedly coming apart and tipping my expensive camera to the ground - much cheaper than the proprietary alternative being offered by a famous photographic brand, and it seems to do the trick! Being a 5m roll, it should last me a good while too!