Providing Diapers, Wipes, and any special Food or Formula that the daycare doesn't provide is normal. Being required to bring all your child's food is not normal.
Most daycares will accept donations for toys, equipment, books, extra clothes but in my experience don't ever ask or require them. When my youngest outgrew his super expensive bouncer (gift from grandma), I brought it in for the nursery and the gratitude was amazing.
Paying extra for curriculum is also not normal unless there are special circumstances. Since my oldest is school age and in summer care, in addition to the higher daycare fee for longer hours, I have an additional weekly fee for him to go on field trips. (he's a bit shy, so on the weeks that he doesn't feel like going on the trips I don't have to pay)
During holidays or special parties, it is also normal for the daycare to send home a wish list for the food or drinks they'd like for the kids party and every child usually brings in one item from the list. It's also pretty normal for parents to forget or bail so I'm on a volunteer list for the daycare to call if they need extra items.
My 4 kiddos go to a Childtime daycare which is a huge chain where the staff can sometimes be treated the same as at McDonald's. I sometimes stop by starbucks on my way and bring the teachers iced mochas or coffee cake.
My advice is to add up your all monthly or quarterly daycare cost, including any items like food or other extra stuff that is not normal. If everything added together comes out to more than what the standardized daycare down the street charges, then you may want to consider if you prefer the small family setting in which case the cost is totally worth it.