Guava Lotus Travel Crib
Purpose-built for travel — about 15 lb, folds into a backpack that fits most overhead bins, GREENGUARD Gold certified, with a zip side door that turns it into a playard.

The default affordable playard — doubles as a bassinet and a play space, folds compactly, and it's everywhere.
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Budget registries and a setup at the grandparents' house
The affordable everywhere-playard — heavier and bulkier folded than a purpose-built travel crib, so it's better for the grandparents' house than for flying.
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