Recycling larger items (TVs, refrigerators, computers) is available at the Williamson County landfill in Hutto. See this link for details and hours of operation.
River Ranch County Park: Williamson County is developing their newest parkland comprised of more than 1,000 acres of meadowlands, wetlands and hills located between Leander and Liberty Hill off CR 282 just south of CR 284. The park is not currently open on a daily basis, but has special events to allow visitors to access the trails a couple of times a year. Updated information can be found here.