If not I think I am on to a genius idea....
I have 3 sons and now my 4th child, a girl, is almost ready for toilet training. When the boys were newly trained, if we were out for a long walk in teh countryside and they were caught short, they would do a 'secret wee' up against a tree - Bob's your uncle! They still quite enjoy an alfresco pee every now and again :)
I remember as a little girl in the same scenario weeing all over the back of my trousers or tights regularly, having to pull them way forward out of the way, falling over backwards into the leaves with my bare bum etc. -Or I see adults holding little girls up to wee and risking getting pee all over their arms...
I know you can get various products for festivals, camping etc that enable women to pee standing up - like the shewee, pstyle etc etc.
Is there such a thing as a toddler sized one, so my girlie can occasionally join her brothers peeing against a tree if she needs to??