I have the exact problem to your solution. The single use tooth brush by Colgate is the best bet for you. Exactly, what you wanted.
It is a single use mini toothbrush. No water or rinsing is required after using the toothbrush. It has a peppermint flavour.
Moreover, it is very reasonably priced. You can purchase Single Packs which consists of 4 packs. One pack consists of approximately 4 toothbrushes. Hence, total of 16 toothbrushes would be ideal for you and your family.
There are a total 116 Customer reviews of this product on the Amazon website.
Pros (Based on Customer reviews)
- Toothbrush actually works quite well, but it tickles
- Peppermint taste is nice and more powerful then I anticipated, but in a good way
- Toothbrush is very sturdy
Cons (Based on Customer reviews)
- Packaging is a little more bulky then it should be
- Metal wrap didn't open cleanly, so brush was stuck
- Toothpick is sharp, but maybe a little too soft to be effective