Some parts of the world invite you to take your waste out with you including body waste. That is not the case in most Australian locations but it is good practice to dig a hole for your business.  Titanium versions are the lightest but quite expensive. Only one member of your group needs to carry one so the Fiskars version from Bunnings, Mitre 10 or elsewhere for under $4 is a pretty good deal. But of course for an extra $30 you can save 70g if you get THE deuce.

coghlans-backpackers-trowel Coghlans Trowell

A lightweight, convenient trenching tool made of high impact styrene.

Weight: 2 oz. (55 g)

I have seen discussion of an Ezee Trowell on some forums – I suspect it is this one. Also Elemental Stool Tool.

fiskars_trowel The Fiskars Nyglass Trowel .  Remarkably light and strong. Remarkably affordable. One-piece construction means no loose handles and they will not bend at the neck when digging.

On my home scales this trowel weighs 89 g.

Available at my local Bunnings hardware store for under $4 – great weight per dollar.

gsi_trowell GSI Outdoors Cat hole Sanitation Trowel

Serrated, sure-grip sanitation shovel

3.1 ounces – 88 g

Helinox Helinox The Deuce – Lightweight Toilet Trowel / Spade .

Designed in Colorado by Mike at The Tent Lab and made by DAC in South Korea, The Deuce is very light at only 17 grams and measures 173 mm long. It’s very tough and sharp enough to cut small roots.

Around $35

montbell_handy+scoop Montbell Handy Scoop

Lightweight, strong, and handy! This lightweight trowel will help you get the job done.

Plastic coating over handle
Nylon strap
1 mm thick stainless steel construction
6.25″ long
Weight: 1.4 oz ( 40 g)

sea_to_summit_pocket_trowell Sea to Summit Pocket Trowell

There are at least two models one nylon and the other aluminium which claims to be the lightest in the world at 75 g.  Of course it is not – and is heavier than the Coghlans trowell above.

One model weighs 3.5 ounces (99 grams)