Since people love summaries, i can give my preliminary results here: 1. anything 'parabolic' will work better than random crap like pringles cans, or pineapple tins. THE SHAPE MATTERS. 2. those takeaway containers lids ARE metal. go figure. 3. No matter what you do, a weak adaptor will remain a weak adaptor. If you want to boost wifi, dont neglect the three important parts: Adaptor, antenna, takeaway container lids. So to make a long, boring work night less boring me and a co-worker decided two things. 1. we want to set up a long range wifi network 2. we want to make stupid, passive wifi boosters the cheapest and easiest way possible. I figured i'd document my findings and designs, so that people can laugh/join in. Current design ideas/equipment: 1. Metal 3KG pineapple tin. first attempt will be 'cantenna' style, second will be to hacksaw it in half and make it somewhat parabolic. 2. aluminium foil take-away containers (rectangles should work, yeah? ) 3. "metallic" take away lids 4. Empty coke/pepsi cans with cutouts (anyone mature enough to use scissors should be able to achieve this one) I will be using a freeware program called "wirelessnetview" for results, since its easy to read and gives average signal strength %'s Photos of the equipment: short USB extension forced into the hole in the tin This is the arts and craft version, and its quite simple: bend the "foil" lid, use tape to make it stay bent, and either stick it to, or sit it behind, the aerial.