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.