Summertime, and the living is easy: sit under the stars and watch Steven Spielberg's E.T., attend a few art shows, catch a production of Hairspray. There's lots to do in Denver this fun-packed weekend -- and many of the best possibiities are free. For more entertainment opportunities, visit the Westword calendar, and leave your suggestions for any other events that cost less than $10 in the comments section below.

See also: - Five offbeat things to do this summer with kids under the age of five - Ten places you and your dog will love this summer - The three best drive-in movie scenes to celebrate the drive-in's eightieth birthday

The Lowbrow Birthday Party Toy Show at Lowbrow (Friday, free) When members of the Ladies Fancywork Society opened Lowbrow a year ago, they provided Denver with a place to buy art supplies, a workshop space and a gallery with great shows. Celebrate the first anniversary of this versatile space at a birthday party/toy show featuring work by many local artists as well as free beer, wine and party hats.

Denver Public Library Used Book Sale at the Denver Central Library, (Friday-Sunday, free) Stock up on summer reading material at what's always a killer bargain: the DPL's used book sale. Enjoy the summer weather while you stand on the lawn of the library this weekend and sift through boxes and boxes filled with awesome books, CDs and DVDs at insanely cheap prices.

Hairspray at Founders' Green Park (Friday-Saturday, free) Think outside the box! John Waters did when he created the classic camp film, and now you can see the Aurora Fox's production of the musical version of Hairspray outdoors -- for free. Stapleton MCA is presenting this live version of the tale of dancing teen Tracy Turnblad. It's strictly BYOB: bring your own blankets.

Citizens' Band: New works by Sara Guindon at Fancy Tiger (Friday, free) Sara Guindon's illustrations are always a treat to explore. The artist creates whimsical worlds full of rich characters; it's easy to get lost in their imagined backstories. Peek into that world tonight at this art-show opening, which includes beverages from Breckenridge Brewery and Pabst Blue Ribbon.

Denver Handmade Homemade Market at 2828 Larimer (Saturday, $2-5 or something handmade) Support local artists and creators at this unique marketplace. Rather than having set prices, everything -- from local food to crafts -- is priced by suggested donation. Bartering is also encouraged, so come prepared to trade and escape from the big-business commerce system.

This annual Lakewood bash is sure to be a fun, all-day affair. Events at the Lakewood Heritage Center include a hula hoop contest, museum tours and a water balloon toss; the evening ends with a performance by So What Brothers and an outdoor screening of

-- complete with free popcorn.

Bikes & Beers at Three Lions Pub (Saturday, free) 'Tis the season for pub crawls; kick off your summer of drinking and enjoying the outdoors and this bike-propelled crawl starting at Three Lions at 2 p.m. From there it will continue to three other bars, but you can pick up a free drink if you get to Three Lions a little early.

National Get Outdoors Day at City Park (Saturday, free) Experience the greatness of the outdoors today at City Park's fun festival. Learn how to fish, climb, paddle and lots more at the four interactive villages that will be set up in the park as part of this national event to celebrate getting out of your house.

Denver City Limits at Marion Street Tattoo (Saturday, free) Experience the streets of Denver through the eyes, and lens, of photographer Spencer Korey Duncan at this art opening tonight, which features 1,000 images from the streets of the Mile High City. It's also a rare opportunity to buy super-inexpensive art: The photographs will be going for only $5 a piece.

"Odd Bits" Art Show/Silent Auction for Mission Supports at West Side Books (Sunday, donations) Mission Supports helps adults with developmental and cognitive disabilities, and tonight you can support this worthy cause at an art show and silent auction. Listen to accordion music from Ron Tomasic while you bid on vintage pieces of art: good works for a good cause.

• Things to Do