T1 modules to build that net over 100mil/day passive ISK!
There are two T1 Items right now that, unlike most items which sell between 0-10% more than there cost to build, sell for 100%-200% of their value.They are:
Prototype Cloaking Device I
The big money maker is Prototype cloaking devices. The BPO only costs 90mil isk, and in most regions it can sell for 2-4mil isk (sometimes more!) and only costs about 900k to build. And it takes no special skills to build. Ive made over 100mil isk in a day doing nothing but being logged out as my cloaking devices sell over the market.
Inertia Stabalizers I
This is a very big money maker right now because of the popularity of very fast battleships. With the new patch, the best way to achieve high speeds is to fill your low slots with these things, so the market supply is not meeting the demand. That being said, you can build these for about 15k isk and sell them for 40-120k isk in almost all regions. It really is a money maker!