The thing about toys is that they get beaten up, chewed on, and broken, then thrown in the trash. Vacuums just get put in basements or attics. It's like... not really going to be that easy for you to find one. Not to mention, IF someone actually takes the time to sell a toy that they'd perceive as unprofitable, it's just going to be listed as 'toy vacuum,' not something specific, making it even harder to search for.