Great list here boys!
I'll add a few that I personally like...

- Duct tape and electric tape wrapped around your water bottle. This has saved my a$$ many times! (Pic attached)
- Electric tape for the tip of your barrel. Will keep rain, snow, and debris out. Will not change point of impact either.
- Champagne cork, Lighter, and ziplock bag- (Duck hunting) Burn the cork until black, let cool, then rub on your face for cheap face conealment.
- Costco light gloves, can be found for cheaper in store. Great for early morning hiking up the mountain. Thin enough not to sweat but thick enough to to keep the morning frost off your hands while hiking.
- Surui carbon fiber tripod with head - I absolutely love this tripod and head (I'm not a fan of the heads with the arms). For $129 I don't know if it can be beat.
- Hisea Waders- These are the best bang for my buck. I had a pair for 5 seasons and finally got a small pin hole leak. I just replaced them with the same pair. They now come with a "lifetime" waranty. Best $105 wader you can find.
https://a.co/d/4k7xy5J
- Swivel bucket top - Turns a 5 gallon bucket into the perfect dove hunting seat. Plenty of storage for extra shells, snacks, and downed birds.
https://www.homedepot.com/pep/5-Gal...707841089-351272228847&gad_source=1&gclsrc=ds
- 32 degrees top base layer - these can be found at costco periodically. I've had mine for many years and they are still working well
•98% Polyester, 2% Spandex •Regular Fit •27” Body Length (Size M) •¼ Zip •Reglan Sleeves •Side Slits •Stretch Comfort •Item# M8812 •Imported
www.32degrees.com
- Moleskin - It is cheap, light, and will keep your feet happy on long steep hikes. Apply at the first sign of a hotspot. *make sure you get the thin stuff. The thick stuff is super uncomfortable in the boot.
https://www.walmart.com/ip/Equate-M...=local&wl12=35756729&veh=sem_LIA&gad_source=1
- Rubberband - I wrap around 3 shells and put in my bino-harness. It keeps the shells quiet and I always have exta shells if I get separated from my pack
- 1 gallon ziplock bag - perfect for holding my lunch/snacks together in ome place
- Tyvek sheet - put under airmatress when sleeping on the ground. It creates a moisture barrier and protects your mat from rocks/sticks that could puncture it.
- Old plastic grocery bags - for the back of your upland vest. Holds even the biggest pheasants and keeps the blood off your vest.