Mario:

Hammer:

Power: 10
Location: Mushroom Way.
Price: 0 coins
How to obtain: Defeat the Hammer Brothers in Mushroom Way.

Nok Nok Shell:

Power: 20
Location: Midas River
Price: 0 coins
How to obtain: Finish the midas river course and the toad in charge will give it to you.

Punch Gloves:

Power: 30
Location: Moleville
Price: 36 coins
How to obtain: Go to the shop in Moleville and buy this for 36 coins.

Masher:

Power: 50
Location: Booster's Tower
Price: 0 coins
How to obtain: Go into the room with the treasure box out of reach in the air, jump down, and if you did it right, a thwomp should hit the box and you should retrieve the masher.

Super Hammer:

Power: 40
Location: Marrymore
Price: 70 coins
How to obtain: Go to the shop in Marrymore and buy this for 70 coins.

Troopa Shell:

Power: 50
Location: Seaside Town
Price: 90 coins
How to obtain: Go to the shop in Seaside Town and buy this for 90 coins.

Lucky Hammer:

Power: 0
Location: Seaside Town
Price: 123 coins
How to obtain: Go to the shop in Seaside Town and buy this for 123 coins.

Mega Gloves:

Power: 60
Location: Nimbus Land
Price: 102 coins
How to obtain: Go to the shop in Nimbus Land and buy this for 102 coins.

Lazy Shell:

Power: 90
Location: Rose Town
Price: 0 coins
How to obtain: Take the "seed" and "fertilizer" to the gardner. A bean stalk will grow. Climb up it and hit the treasure boxes to get it.

Ultra Hammer:

Power: 80
Location: Gate
Price: 0 coins
How to obtain: Located somewere in the gate, a treasure box containing this weapon can be hit.

Mallow:

Froggy Stick:

Power: 20
Location: Tadpole Pond
Price: 0 coins
How to obtain: Give Frogfucious the cricket pie and he will give you "The staff he used when he was Mallow's age.", aka the froggy stick.

Cymbals:

Power: 30
Location: Moleville
Price: 42 coins
How to obtain: Go to the shop in Moleville and buy this for 42 coins.

Whomp Glove:

Power: 40
Location: Marrymore
Price: 72 coins
How to obtain: Go to the shop in Marrymore and buy this for 72 coins.

Ribbit Stick:

Power: 50
Location: Seaside Town
Price: 86 coins
How to obtain: Go to the shop in Seaside Town and buy this for 86 coins.

Sticky Glove:

Power: 60
Location: Nimbus Land
Price: 98 coins
How to obtain: Go to the shop in Nimbus Land and buy this for 98 coins.

Sonic Cymbals:

Power: 70
Location: Bowser's Keep
Price: 0 coins
How to obtain: This item is located in one of the 6 door exits in Bowser's keep.

Geno:

Finger Shot:

Power: 12
Location: Rose Town or Moleville
Price: 0-50 coins
How to obtain:
1. Go to the Inn in Rose town and talk to Gaz. He will give you this item.
2. Go to the shop in Moleville and buy this for 50 coins.

Hand Gun:

Power: 24
Location: Marrymore
Price: 75 coins
How to obtain: Go to the shop in Marrymore and buy this for 75 coins.

Double Punch:

Power: 35
Location: Seaside Town
Price: 88 coins
How to obtain: Go to the shop in Marrymore and buy this for 72 coins.

Hand Cannon:

Power: 45
Location: Nimbus Land
Price: 105 coins
How to obtain: Go to the shop in Nimbus Land and buy this for 105 coins.

Star Gun:

Power: 57
Location: Bowser's Keep
Price: 0 coins
How to obtain: This item is located in one of the 6 door exits in Bowser's keep.

Bowser:

Chomp:

Power: 10
Location: Booster's Tower
Price: 0 coins
How to obtain: Match all of the Booster portraits in order, and you will get a key. The chomp is inside the door.

Chomp Shell:

Power: 9
Location: Marrymore
Price: 60 coins
How to obtain: Go to the shop in Marrymore and buy this for 60 coins.

Hurly Gloves:

Power: 20
Location: Seaside Town, Sea, and Sunken Ship
Price: 92 coins
How to obtain: Go to the shop in Seaside Town, Sean, or Sunken ship and buy this for 92 coins.

Spiked Link:

Power: 30
Location: Monstro Town
Price: 94 coins
How to obtain: Go to the shop in Monstro Town and buy this for 105 coins.

Drill Claw:

Power: 40
Location: Bowser's Keep
Price: 0 coins
How to obtain: This item is located in one of the 6 door exits in Bowser's keep.

Princess Peach:

Slap Glove:

Power: 40
Location: Mushroom Kingdom
Price: 0 coins
How to obtain: Is equipped when Peach joins you.

Parasol:

Power: 50
Location: Seaside Town
Price: 84 coins
How to obtain: Go to the shop in Seaside Town and buy this for 84 coins.

War Fan:

Power: 60
Location: Nimbus Land
Price: 100 coins
How to obtain: Go to the shop in Nimbus Land buy this for 100 coins.

Super Slap:

Power: 70
Location: Bowser's Keep
Price: 0 coins
How to obtain: This item is located in one of the 6 door exits in Bowser's keep.

Frying Pan:

Power: 90
Location: Moleville
Price: 300 coins
How to obtain: Go to the shop in Monstro Town and buy this for 105 coins.