And now, for the hippie who has everything: a piece of the rock. Rock history, that is. For a mere $10, the little Catskill Mountain town of Woodstock, N.Y. — yes, the one that lent its name to that rock festival 23 years ago (although the fest was really held 50 miles away in Bethel, N.Y.) — will give you title to precisely one square inch of its historic sod. Residents of the financially strapped longtime music-and-arts colony recently put together the not-for-profit Square Inches Project to help the town retire an $8.5 million sewer-construction debt, plus raise enough spare cash to fund a new arts center and other community ventures (R.E.M., which records at Woodstock’s Bearsville Sound Studio, has contributed $500 to the cause). As for the land rush: With the plots pledged by Woodstockers measuring in at one full acre, there are, theoretically, enough square inches available to raise $62 million. Can you dig it?