Any Which Wall
by Laurel Snyder
This book is sort of a tribute to Edward Eager's delightful Half Magic (which I recommend, by the way). Four children discover a magic wall which dispels their summer boredom, and, of course, they learns some lessons along the way. It's not as original as Half Magic (because, as the author will admit, she stole ideas from it), but it's lots of fun and kids will enjoy it. I appreciate books like this that entertain without using bad language or crude behavior, and have plenty of adventure and excitement, but no violence.
Age Recommendation: 7 - 12 years (great for read-aloud)