You could threattreat them as what they are: Normal hygienaryhygiene items. Just put a Box on the toilet. I know a lot of people having those readydoing that already, in the guest toilet, as well as restaurants/cafes having those readyavailable for their guests. If you have female visitors/clients on site, they might appreciate it in a time of an emergency.
Get one of those larger handbags for work, put your personal stock in there as well as other toiletries you might need (comb, toothbrush etc.). Make a habit out of it to to carry this bag to the toilet with you.