The thing about hanging out with other people is that you can learn from them. And learning is good — something about keeping your brain cells strong, I think. Take, for instance, this arrangement of seashells and dried grasses. A friend of mine who loves to collect shells at the beach put some of her best ones in this clear large-mouthed glass vase and used the shells to anchor a couple of bunches of grass she bought at a craft store. Result? Simple, easy and inexpensive with a definite wow factor. She just sort of threw this together while I sat and watched, amazed. The main requirement is a clear vase or container that’s wide enough for your shells. And if you don’t have any shells, you can buy them in bulk at most craft stores — although I bet you’ve got a forgotten box of them tucked away in the garage from your most recent vacation when you found these lovely shells on the beach and dragged them home because you knew you could do something with them. Well, you were right! See, you can learn tons of things from your favorite people. Such as my 23-month-old grandson, Capt. Adorable. Every day I spend with him is a learning experience — from repurposing toy boxes into comfy reading chairs to innovative uses for mashed potatoes (clay, glue, finger paint, hair gel). Read more lessons the Captain has taught me in my weekly newspaper column at http://www.timesdaily.com/article/20100305/ARTICLES/3055005.