Favorite Bag for park?

[dreamit]

I used the Baggalini messenger bag, as well. I purchased on Amazon, but often see these at TJ Maxx at a very low price.

 

[Awnry]

I've always done the fanny pack thing because I just love not having to physically carry anything. I was thinking of trying out a small backpack for our next trip so that I can carry a water bottle and ponchos. I'm not a fan of crossbody bags for walking around the parks because I hate having to keep switching shoulders when one gets sore. Anyone have suggestions of small, lightweight backpacks they've used? Unisex would be preferable, but isn't a requirement.

Would love suggestions!!