A few months ago I quit caffeine completely for a few weeks.
I was constantly drinking hot tap water. Finally I gave in and started making tea with it. Then, I started drinking more tea. Finally I started drinking coffee. After a while the cheap coffee wasn't good enough.
So I went back to Trader Joe's to see that the price of a large can of their houseblend has increased by more than $2.
I also noticed (last time I had my hair cut) that the local cheap hair cut place increased their price per cut.
Definitely unmistakable signs of inflation.