Keep in mind that commercial guinea pig cages are often WAY too small for guinea pigs. They require a large enclosure so they can run around, not to mention stay separated from their cage mate in case they get into a squabble. The worst thing you can do to your guinea pigs is to put them in a tiny enclosure where they will constantly be in each other’s spaces all the time, which will result in fights and later on, separation of your guinea pigs.
A constant supply of hay is essential for guinea pigs!! A misconception about guinea pig diets is that they should get the occasional hay, however hay alone is supposed to be 80% of their diet! The amount of times I see a small quantity of hay in their cages is astounding and disappointing.
First things first, a guinea pig emergency kit does not in any way shape or form replace a vet visit! This kit is only to provide temporary relief for your pet until the owner is able to take their guinea pig(s) in for medical treatment.