bamboo basket
簍 centers on a container made of bamboo: a basket woven from bamboo strips.
簍 combines 竹 (bamboo) with 婁, which likely contributes the sound. The character originally referred to a bamboo basket.
The top 竹 is bamboo, and the bottom 婁 looks like a woven container. Picture a bamboo basket woven tightly to hold things.
For ル, imagine a bamboo basket so light it looks like a loo (ル) roll holder: loo -> ル, and the basket is woven from bamboo.
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