It will only discourage the reading habit. Buy books on tape, especially for a child with a learning disability. Listen to them in the car, or turn off the TV and have the family listen to them together. Take your children to the library regularly. Check the library calendar for special summer reading activities and events.
Libraries also provide age appropriate lists for summer reading.
Encourage older children to read the newspaper and current events magazines, to keep up the reading habit over the summer and develop vocabulary. Ask them what they think about what they've read, and listen to what they say. Ease disappointment over summer separation from a favorite school friend by encouraging them to become pen pals. Present both children with postcards or envelopes that are already addressed and stamped. If both children have access to the Internet, email is another option.