It's good to be prepared on short hikes just as well as long hikes or overnight trips! I have found I prefer to carry a small pack with these few items instead of regretting that I don't have something half way through the hike.
For a day hike, I don't need more than a 20L or 24L pack. Sometimes I can get away with one smaller!
REI Co-op Trail 25 Pack
This stays in my pack because I never know if I'll get stuck out after the sun goes down!
Headlamps For Running, Hiking, Camping & More | Black Diamond
Any kind of first aid kit is always a must. Just always keep in my pack so I never have to worry!
General Medi Mini First Aid Kit, 110 Piece
I always bring a Nalgene when I go hiking because these water bottles are practically indestructible! They have a 16 oz. bottle that is PERFECT for electrolytes. Especially if you don't want all of your water to be flavored. I also cover all my water...
REI Co-op Nalgene Bottles
I always bring a snack. And these mini clif bars are the perfect size for a quick bite on the trail!
CLIF BAR Minis
These salt chews are life savers! I'm always worried of getting dehydrated during a hike. These are super easy to always have in a first aid kit too!
SaltStick FastChews Electrolytes - Lemon Lime
I have recently started bringing my hammock on all my longer day hikes! I love being able to sit at the destination comfortably and read a book! Mostly when I have all day to take my time.
Eagles Nest Outfitters: ENO Hammocks & Accessories
This is great for someone who likes to jump in the water mid-hike, but also it's the best travel towel I have ever used. It actually absorbs water so well! And it dries so quickly!
Everywhere Towels | The Ultimate Travel Towel - Rumpl
This is an absolute must item, I take it on all my hikes and runs! If you have to pop a squat this is a washable antimicrobial cloth to use in place of a leaf or toilet paper. No littering!
Kula Cloth
This is a really good alternate to a water bottle if you can spend a little extra. It gives good peace-of-mind. If you are hiking near a water source, you can refill you water bottle wherever you need to and be sure that you have clean water!
LifeStraw Water Filter Bottles
I always end up wanting to have some binoculars with me on different adventures. These Nocs Provisions monoculars are actually on my list of things to get because they are so much more convenient to carry and share without having to adjust too much. ...
Monoculars - Nocs Provisions
Carmen is my absolute favorite chapstick. The minis are perfect for always keeping in my hiking pack!
Carmex Lip Balm, Moisturizer, and Lip Care Products