Here are some of my favorite summer reading resources for parents:
www.sightwords.com provides free resources/activities for parents to help their children with prereading and reading.
I also recommend www.Readworks.org to parents of students in Grades 2 and up for practicing fluency and comprehension. Parents have to set up an account, but its free.
Also, it is always worth mentioning that the Baltimore County Public Library system offers a summer reading program every year. Information can be found here: https://www.bcpl.info/events-and-programs/summer-reading.html. Parents can also take a trip to the Cockeysville library, which has a great enclosed children's room where kids can play on small equipment, use the puppet theatre, work at a computer station, and read books in fun chairs. It's a fun, FREE environment!
Have a great summer!