I'm looking to invest in some good idea books for 4-5 year olds. Unfortunately, the ones that look interesting online, the local book stores don't carry, so I can't flip through them before I buy them. Which books do you have that you find invaluable (or maybe just really like) ? Are there any you would recommend for good or unique ideas? Some of the books I've purchased online have been a little disappointing and not really what I was expecting. I am looking for all subject areas. Thanks in advance!