If you think of calendars as gifts that shout "I didn't know what to get you," check out these ideas from artisans at www.etsy.com.
Satsumalynn has a wall calendar inspired by Japanese textiles perfect for fans of letterpress. It's $44, and you can see a photo below. Another, CecilyInk had a $14 printed calendar, whose modern graphics in pumpkin, chartreuse and raspberry, sure to brighten the desk and mood of a co-worker. (Photo at right.)
Scouting around for deals on Etsy, you'll also find personalized teacher gift sets by saratams; a calendar that doubles as postcards by SureAsBlue; calendars with reminder lists by pixelimpress; and a letterpress calendar by SycamoreStreetPress that benefits orphans in Ethiopia. Also worth a look are artistscs28, InkspotWorkshop, pistachiopress and TurtlePapers (search for them under "sellers: usernames").
And if your list is bigger than your budget, try littlebrownpen, AnaPapeterie and bluetricycle. For $5, you get a PDF file that lets you print as many calendars as you need. They're perfect as party favors, too.