Club Nintendo

Wii/DS stuff is worth the least and may be expired. Expiry seems to be on a per-code basis, so if one doesn't work, try the next. 3DS/WiiU stuff should work barring the code being redeemed already. The Wii Fit codes could be either for the game only (40 points) or the board + game (100-200 points), it's impossible to tell from the code sheet.
Wii:

Zelda: Twilight Princess
JXSQH9T8KZDZQC
2VFVMDV6UGNKGT
6EBNHGX9EUEYQR
3WYM5R9HQUJYY5

Wii Fit or Wii Fit+ (100+ COINS MAYBE):
NLMPR9Z3RKXWJG
3KXECN9Z6BUXZG
GLVTLQSN324EJG
DXAFLRZA35TVQX
ZX3DP7TKUR2ECJ
NVMXX7W5AQC6FG
2W74NBWZD8BC5G
KKZSDXZYFXZMNK
V5GG2CYVFNNBYG
BGNA7NSMN9XL8E
4WDAXSWPHBBRT5
32FYSMS8H83ZH7
2MXJZLRGQKLY2Z
M4ZYLA9B4LJU4C
G3GP5SWUKYFNRX

Mario Strikers Charged (20 Coins):
KWVZLWZ62VWM3C
TPLSY6U8C9EJBV
WDY32YRM3AUE4M
4AT9WTZPWQPBNJ

Mario Galaxy (20 Coins):
S92LZXYVUFW6GP
JVFGL4X6BBRNSE
WK9WMTR97CLWDM
YF2S6GR8RAE3PZ
XD2N3D9UQZTWMZ
H6RLHPRZGT8ZKX
8Y8VLWU9BXU79X
B4W5ZUYMU9PFBV
A6AXDQWL6DZKZZ
5DYWBYYEKDX4AA
3TGDQLSVYLG4DG
G9DMSZXV5J3X9C

Wii Music (20 Coins):
CLSM52W3YVYE7A
J6XYQFS4YDNLV5
ETKUUKRVDXSJTX
38QMLPXKK87ZFX

Mario Kart Wii(?):
JB26Q89W2RV2ET

Mario All Stars(?):
7WFGYZ98HQN2NR

Mario Party 9 (50 coins):
43HM6Z9GQTJQEJ

Animal Crossing: City
YLDN7FXMS73NWE

Smash Bros Brawl:
B6K4F5SV8ZFQ5C
MWZ20GS8BK863A
3J3FFCWKVBGQ83
T4Y9YDUZWNQV9A
77K947SPDVKZ2M
UHPT7FZTHGR3QE
FQMPDXRCZ9WKHJ
898JK6ZPDYUQNX
HBS5XPT6DFNQME
DNH76BTR5NHXJG

Skyward Sword:
DLSD5TVMMWUYA7
2VJ6MYZ88JJ9HM

Mario Super Sluggers:
SYC7DX9J8PSD5E


WiiU:

New Super Mario Bros. U (60 Coins):
Z3C5AW9AGQCCKK
LHF8WT9ULJ7HWK
WZQLRXRBRVE5VZ
DHB2G4YK9KST7P
5W86H9YJ37DDRA
TUV659WQA4GHQK
945U6FVA5275RR

Mario Kart 8(70 Coins):
3Q8K8CT4LFMXCX
Q4C3G6SHWJ556T

Mario 3D World:
F7MT2FZXVJQ8AG
X5C9NQYT48Nv8Z
WNKB7AX4HTF8AC


DS:
Pokemon White (40 Coins):
Pokemon Black (40 Coins):

3DS:
New Super Mario Bros. 2 (40 Coins):
VV3E37UHKc6GWE
7VC4GXUd9AF74E
Q7WNKGY8YUQTZT

Mario Kart 7:
UAL2QAZY2MPMHV
2HCS7QW5F6XHRZ
34CR3SXKRyHHYT
M4NU7XXZDVQM4C

Luigi's Mansion: Dark Moon:
6ALQK9SQENH7N5
VK3L9LRGKFUSDK
ZS5FBNWXYN25XJ

Pokemon X:
ZSS2N794PXCU3R
8WDW42VTLCGNBX
LUP53TR6H9MRLT
KMF2YJS8JXDK5V
SCZDXCZKJ3MJEP

Pokemon Y:
9ET7JPSEJSL3CX
2HBHZNTXC96EP7
X5VPNJSp6l683k

Animal Crossing: New Leaf:
R3E9QSTWYU4J3Z

Mario 3D Land:
JSZ55NSTNFXLY4G

Yoshi's New Island:
V82MU9YWMGQXXM

Paper Mario Sticker Star:
WN8C68T5G7MGSE
3A8NF39WEXJRPC
RPX2F2SB6J4QWE

Kirby Triple Deluxe
HE429QWF7YTQGZ


LEGACY CODES FROM WII/DS THAT PROBABLY DON'T WORK AND MAY HAVE NO INDICATOR OF WHICH GAME THEY'RE FROM, GOOD LUCK:

NSMB Wii:
T8V57XRKAV2UKX
QVQZ73VG3LTJTK

Mario Galaxy 2:
7WGXAQTH84FZPR
MM82GHW36Z37DT
92U3B7SR92W9QA

Metroid (Wii)
VDYYY4TVGVLYUJ

Kirby's Return to Dreamland:
E3ED8AZ9VL2VXG

Wii Sports Resort(?):
PFBXZyZRq4MCL7
SRPKDVSUVDZMLM


Misc/Unidentifiable:
54H7M6R6HCWWFE
82YZA3T82SB4HR
KJDSGWZU9FQWPX