By the back-door first aid kit, I have placed a bottle each of rubbing alcohol and hydrogen peroxide.  I decided to take spray nozzles from generic spray bottles and replace the cap on the alcohol and peroxide bottles with the spray nozzle.  Now, you can dispense either with one hand.  I think this would be good if the other hand has to hold a screaming child, or the other hand is dirty, or you just need the product quickly.