Sample / Recommended Three Season Backpacking List
The following would be my recommendation for a comfort oriented, light weight style, with good price/performance ratio list designed for 3 season use in the sierras.
This is pretty close to what  I helped a friend put together. Many items can be found for less money if you wait patiently for off season sales
See http://www.verber.com/mark/outdoors/gear/  for more detailed explanation of selections
Item selection is largely driven by the parameters at the top of this sheet (open in excel).  Many items are formula driven
Items which have a  "light green" background are options which I sometimes select to over-rule default choices.
Retail Price $1,773
Number of Days 3 0 Bear Canister
Median daytime temp 70 1 Bad Bugs
Lowest expected temp 40 1 Cooking
Tot Oz Lbs Oz
Pack 24 1 8
Standard Equipment 109 6 13
"Base" Weight 133 8 5
 
Food&Water 110 6 14
Total Pack 243 15 3
 
Worn 50 3 2
Skin Out Weight 293 18 5
Items # of[1] Ozs Total Retail Description / Explanation
Pack 24
Gossamer Gear Gorilla Pack 1 24 24 $165 Light weight moderate volume pack with internal frame good to 25-30lbs
Home: Shelter 12.3
Hexamid Cuben Shelter w/ Bug Netting 1 11 11 $259 small but effect shelter. If you want more space/protection consider tarptent.com and mountainlaureldesigns duomid
Hexamid Cuben Door 1 1.3 1.3 $59 net tent to keep bugs away. Can be used stand alone our under gatewood cape
Home: Sleeping Gear 37
Trash Compacter Bag 1 2 2 $1 Keep quilt and night clothing dry during hike
JacksRBetter Hudson River Quilt 1 19 19 $289 Three season sleeping quilt. Will work for most people down to 20F.  NuntakUSA quilts are nicer
PEO Ether Thermo 1 16 16 $60 Comfortable sleeping pad good down to 20F, compresses well.  Use backpack to get feet off ground
Small & Essential Items 22.7
SeaToSummit Drybag 2L 1 0.8 0.8 $10 keeps all my small items together so they are easy to find and protected from water
Emergency & Repair Kit 1 2 2 $10 matches, lighter, firestarter, repair kit
Adventure Medical .5 Fireaid Kit 1 4.4 4.4 $24 Adventure Medical Ultralight .5 + iodine, aleve, pro-tick remover, small bandaids, spyroflex bandages
Bathroom 1 3.8 3.8 $10 Bandana, soap, toothbrush, floss, baking soda, blistex, bug, sun
Wipes 4 0.4 1.6 $1 One / day + 1 extra
Kelty Triptease Rope 1 1.5 1.5 $15 You can always find uses for rope
Wallet & Keys 1 3 3 to get back into  car, id for people to know who I am, etc
PrincetonTec EOS Headlamp 1 3.6 3.6 $39 Great general purpose LED light.  You could an "ok" light  for less
Katadyn MicroPUR Tablets 1 1 1 $12 Doesn't have funny taste like iodine… sealed in 1L doses
1L Water Container+Scoop 1 1 1 $5 Hold water for chemical treatment, scoop to help load the water container
Essentials on Person 3.5
Swiss Army Classic 1 1.2 1.2 $15 Tiny knife which should be sufficent for most cutting jobs
Compass 1 1 1 $15
Hand Cleaner & Blistex 1 0.4 0.4 $3
Map 1 0.9 0.9 $10
Cooking 5.9
Caldera Keg GVP System 1 5.6 5.6 $60 Efficent and easy to use system. DIY Alchohol cheaper. MLD 850 + UL Caldera nicer but more $$$
GSI Telescoping Foon 1 0.3 0.3 $3 There are a variety of options
Bearvault Solo 0 33 0 $60 ok for up to 6 day trip if packed carefully
Clothing Carry 24.8
Sea2Summit Ultralight Drybag 8L 1 0.9 0.9 $12 holds clothing that might be worn during the day. Rest of clothing are with my quilt
Injinni Toe Socks 1 1.1 1.1 $12 Extra socks
Patagonia Mid Capilene Tights 0 6.5 0 $44 to sleep in on cold night and extra warmth if day surprisingly cold (lows <35F)
OR Deluxe Bug Head Net 1 2 2 $15 Wear if the bugs are going to be really bad
Dri Ducks Rain Suit 1 11 11 $15 Fragile but effective rain protection. Easily repaired with duct tape.
Montbell Inner Down Jacket 1 8 8 $140 insulation if below 50F when sitting around.  When it's below 30F worn while active.
PolarBuff Neck Gaitor/Hat 1 1.8 1.8 $32 Use as a hat, or in colder weather as a neck gaitor with Snow Cap
Clothing Wear 46.8
Injinni Toe Socks 1 1.1 1.1 $12
Ex Officio Convertible Pants (sale) 1 10 10 $40 comfortable over a wide range of conditions, durable, drys quickly
Ex Officio Boxer/Briefs 1 2.7 2.7 $15 best protection from chaffing I have found
Sekri PowerDry+Xstatic Base 1 6 6 $32 Highly versitle base layer made from Powerdry with xstatic to keep smell down
Inov-8 Flyroc 310 1 24 24 $90 Light weight trail running shoes.  Take a bit getting used to. Use whatever trailrunners work for you
Sunday Afternoon Adventure Hat 1 3 3 $36 when it is hot!
Consume 110
Daily Food 3 18 54 zone bars, lunch, couscous&meat, chocolate bar (more in winter on extended trips)
Alcohol in Plastic Container 2 0.5 2.5 $4
2L Platypus Water Holder (w/ xL) 1.5 33 53.5 $19
Misc/Options 6
Gossamer Gear Lighttrek4 Poles 1 6 6 $130 Stability while hiking and pole to setup tarp. [For less money can find heavier poles]
Digital Camera 1 7 7 you most like have something already

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Use custom filter set to "not equal to 0" to see what is being packed on this trip.