Outdoor parties, picnics and hikes can be distressingly earth-unfriendly. You can end up with bags full of 'disposable' products like paper plates, plastic cups and utensils. Now, you can buy fully biodegradable alternative products to replace those items and more. Here are several earth-friendly ideas to help you enjoy both nature and convenience as you keep your gathering green.

1. Biodegradable plates ? as sturdy as paper, but made from cane fibers, a natural byproduct of sugar refining. When the picnic's over, toss them in the compost pile. $21 for 125; Treecycle; (406) 626-0200.

2. Tableware utensils ? 100 percent tree- and petroleum-free, made from plastic based on potato starch, they'll decompose in a compost pile. $6 for 50 forks, knives or spoons; Real Goods; (800) 919-2400.

3. Compostable cups and straws ? made from a corn-based plastic. Drink up, then toss these nonallergenic, crystal-clear cups and straws into your compost pile. $9 for 50 cups, $6 for 400 straws; Eco-Products; (303) 449-1876.

4. Vortex blender ? it's human-powered! Whip up party drinks, even miles from any electrical outlet. Forty-eight ounce pitcher, stable stainless-steel base, ergonomic handle with two speeds, secure base clamp. $88; Real Goods; (800) 919-2400.

5. Petroleum-free charcoal starter