Since they nice and clear… fill with water and hang at the doorway or window to deter wouldbe flies entering.They see the reflections of a really enlarged bug and beat a retreat. in Spain they hang up plastic bags full of wanter but these bottles are more robust i think>
Rosie

U’ve got good pics, the site could use a tiny bit of work (no offense) its still awesome

1. cut tops off and pierce three drainage holes at base; put an inch of gravel in and fill with compost - they’ll grow three carrots per bottle on a windowsill if you have no garden (radishes, etc, also).

2. if you have a garden, cut the base off and pierce holes around the bottle’s sides and base randomly. Bury them lid-down (with lid on) in a hole in your garden’s veg-beds or flower-beds with a bit of grit or gravel mixed into the hole; once buried level with the ground, fill the bottles with horticultural grit or gravel.
Instead of watering the upper soil, put the water into these bottles instead and it goes to the roots, no evaporation form surface, far far more efficient way of watering your plot!

3. refill with tapwater and use as weights for toning upper arms and shoulders!

laura

Phenylalanine is an artificial sweetener. If the squash has sugar, it doesn’t need Phenylalanine.

Cut the tops of them, connect the bottoms to a curving pipe like the shape of a J, drill a hole in the lid and stick it on the other end of the pipe. Attach it to a wall near a plant and it will give the plant a constant sream of food (until the water runs out). Make an overflow pipe coming from your guttering and that will give it more water. A bit pointless when it rains but still creative.

half fill with water, pop in the freezer with lid on, remove when needed to stick in a picnic bag in order to keep food and drinks nice and cold. Three or four stacked neatly with beer cans will provide chilled beer for a barbie-Q.

you can use plastic bottles to bottle your homebrewed beer. it may seem a little less classy but it works great. Or, you can use them for making root beer or ginger beer if you dont partake or if you just aren’t into homebrew. There are millions of recipes and guides online and you can even get root beer making supplies and brewery and vintner supply stores.

refill with juice for taking on picnics

i been collecting milk bottles, detergent bottles, etc. since they are all coloured, i am planning on attaching them and feeding some lights through it. Hopefully, this will create a cool light fixture.

you can use big plastic bottles as cloches for protecting garden plants - just cut off the bottom of the bottle and put it over your plant. It’s good protection against frost and cold winds, and also against slugs and other predators.

if you have an outdoor pool, fill them with water, seal them, and freeze. when the pool water is too warm, throw them in.

reuse to make koolaid that needs to be portable. (like camping)

fill with sand, rocks, etc for an anchor.

fill with sand and keep in your truck in bad weather, the added weight is good, and if you’re stuck the sand/rocks might provide traction.

cut and use the top as a funnel.
cut and use as a scoop for kitty litter, sand, rock salt, etc.

seal and use as floaties to block off areas, or tie to small items on a boat, if they fall in, you can pull them up.

Cut off either the top or bottom allowing them to be “hooked” over a stick in the garden to keep away birds from your veggie patch.

This is used mostly on allotments, as the breeze makes them rattle against the stick and scare them off :)

Plastic Bottle Trellis:

http://www.diynetwork.com/diy/cr_garden_patio/article/0,2025,DIY_13757_5477970,00.html

Make vases out of them, I guess it’s better than the water bottle (since i posted this on the water bottle question as weel). But since these bottles are more robust , i guess they make a better vase :
Check out the last thumbnail in this link :
http://www.flickr.com/photos/reciclarte/sets/72057594113997025/

Using the larger bottles, cut the bottom off a few inches up. Set the legs of garage or basement storage units/shelves in the “cup”. If it is damp or your basement is leaky or rain came in the garage, the legs of the units will stay dry.

make a fly trap:

http://insected.arizona.edu/flyrear.htm