Since the financial crisis of 2008, central banks around the world have worked to expand their money supply in an effort to pump liquidity into the market.
One woman listed the accessories she invested in: a special "Boppy" nursing pillow, a rocking chair, nursing bras, a pump, and herbal supplements (rumored to enhance milk supply).
We had an energy situation where suddenly oil producers or speculators want to constrict supply, and next thing you know you're paying four bucks at the pump.