Well, I don't live in a state that has emissions tests any more, so let's bypass that sucker!
DISCLAIMER: modifying engine components can and will void any sort of warranty (not that anyone on this site is worried about that). Working on cars is dangerous, accept that you will get burnt, crushed, sliced, diced, and killed. With that in mind, watch your digits and be careful. I accept no liability for any modifications that cause engine failure, engine explosion, or cause the engine to disappear into another dimension. Nor do i accept any liability for personal injury, unless there is a wormhole involved, then it's totally my fault.
Step 1: Get the parts together
1x small paint can and lid (this can be substituted for any container, though i'd recommend metal)
1x coupler to fit hose
1x nut to tighten coupler
Length of hose (determined by the size of your engine bay)
Tie Wraps to mount can in engine bay
Drill with bits appropriately sized for coupler and vent holes