I would put out mini ones in guest room for them to use. But I always feel that my toiletries are for me to use. I don't mind sharing toothpaste, and if guests need some, that's fine.
But we all use different toiletries in this house anyway - between skin allergies, preferences and occasional treating myself to L'Occitane refreshing stuff to get me going in the morning (at €17 a bottle, I make that last MONTHS!), we all have different ones.
Occasionally DH and I will share a lemon or lime shower gel, and DD has got to like that as well, so that would tend to be our "go to" for travelling, so we'll all share it.
But for everyday use at home, or when travelling for weekends etc, we all take our own. And we'd expect guests to bring their own toiletries too. Which has always been the norm in both our families.
Spare emergency toothbrushes are available, and we will provide spare other bits if wanted, but really, I would not like a guest helping themselves to my or any of our toiletries without asking. Some of them are quite specialist (not just my treat ones - DH has some for skin problems and DD did for a few years as well).