Er, my 5 year old still drags out his handmade baby blankets. He uses a largish one still every night on his bed on top of another blanket! I love wrapping the little ones up in their blankets, and handmade ones are true treasures.
AC is way cold in the summer and nights can be cool also-they'll get lots of use as it gets colder as well and all the light blankets they've been given won't do. (and the baby will most definitely still be a baby that winter) Plus a lacy pattern IS cooler, you're right!
How dare they criticize your knitterly goods?

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OTN: - Tree of Life afghan, socks, afghan for Dad, Tura Maeve baby dress, alpaca Winter Mountains scarf, Frida poncho
Recently FO- Quinn cabled bag, Evangeline fingerless gloves (2 pairs), Topknot baby hats, pompom & earflap hats, 8 pairs of socks, Baby Folkwear Caftan, Debbie Bliss Baby Shawl (blanket)
I'm SimplyRenee on Ravelry- feel free to add me as a friend & I will do the same!