Freezers are vital. Without a freezer, battling is pointless. It's like cutting you're hp in half, or even into one fourth for not having one. You need a freezer. There are cheaper alternatives to a H4000 Helmet.

First off we'll start with Recommended Freezers:

Ancient Lupe Wand
Good Points: Under 20k almost always because the brain tree gives the out. Can be combined with Iron Lupe Sword
Bad Points: It breaks, and starts to get expensive.
7/10

Black Frost Cannon
Good Points: Good Attack with freezing. Cheap
Bad Points: Low Freeze Rate
6/10

Elephante Stunray
Good Points: 50k
Bad Points: Very low chance of freezing
5/10

Entangling Lenny Lasso
Good Points: Atleast 2 times cheaper than H4k, plus you can use lenny healing seeds as a combo with this.
Bad Points: Ewww lennys
10/10

Freezing Potion
Good Points: Cool Picture =] 2 extra icons.
Bad Points: Roughly 400k extra an icon for this.
8/10

H4000 Helmet
Good Points: It freezes! Can be used with any species
Bad Points: Keeps raising in price.
9/10

Heavy Blue Tunic
Good Points: Cheaper than h4k, good defense
Bad Points: You need 1000 intellegence for this to freeze
6.5/10

Moehog Skull
Good Points: Awesome attack and defense
Bad Points: Really, Really, Really big price tag. Expect a high 8 digit sum
5/10

Sleep Ray
Good Points: 4 Icons
Bad Points: At roughly 1 million extra an icon, this isn't very good.
4/10

Meerca Mesh Net
Good Points: Multi-Freezer
Bad Points: Only about a 15% Freeze rate
7/10

Pearly Koi Bubble Net
Similar to Meerca Mesh Net

Slumberberry Potion
Good Points: 10 icon attack, multi-freezer
Bad Points: 9 Million Price Tag, 20% or so freezer
7/10

Ice Dice
Good Points: Nice Multi-Freezer at 25%
Bad Points: People want at least 20 million for this, go for Slumberberry Potion
5/10

Scroll Of Freezing
Good Points: Need a quick freeze?
Bad Points: Increasingly Expensive
8/10

Snowglobe Staff
Good Points: "Can" freeze, very cheap
Bad Points: Low chance
6/10

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What not to use:

Any other type of Frost Cannon

Amulet Of Chaos

Ancient Hourglass

Blanking Ray

Calculation Device

Exploding Acorns

Gelert Blade Of Frozen Wrath

Golden Peophin Harp (Unless it's under 5 million)

Ice Mote

Icy Chia Goggles

JubJub Foot Hardening Lotion

Kaylas Potion Of Freezing

Lenny Ray Gun Of Freezing (Just use the Entagling Lenny Lasso)

Lupe Wand (Use Ancient Lupe Wand)

Poogle Liquid Freeze Potion

Quiggle Sword Of Terror

Tangle Net Gun

Terror Stone