Straws & Connectors - Make play houses and forts, design buildings, engineer spacecrafts and many other activities. Appropriate for a wide age range. The most economical building set around! Includes idea guide.Make play houses and forts, design buildings, engineer spacecrafts and many other activities. Appropriate for a wide age range. The most economical building set around!Includes idea guide. Includes: 390 straws, 315 connectors and an idea guide. Age: 4+.