Even if you are making the entire circuit yourself, I'm not sure you can avoid having to order some parts online (or through a mail-order catalogue, but I assume that the somehow shipping is a problem not ordering). This is because the circuit involves storing energy in a capacitor, inductor, or a combination of the two (which is generally the more efficient way). Depending upon what's available locally, you might be able to get suitable capacitors and/or inductors without having to order them (but then again you might not). While a boost converter can be made with discretr transistors, using a purpose-built IC allows for faster switching speeds in the circuit (which again increases efficiency).
In any case, here's a link that might help you with your design.