Magic Mesh is a strip of "netting", although it is fabric. Usually it is about 3 feet by 2" wide. It is sticky on one side, so you just cut your length and stick it down! Quick and easy!! You can lay it on cardstock, over a photo or anywhere you like. It is a speciality scrapbook made item, so it is acid free. It gives dimension to your layouts in a soft, easy kind of way. Magic Mesh is a good embellishment to achieve that "old fashioned" look or "antique look". The darker colors are good to get that effect. Use the brighter colors for a "funky" look.
I used to buy it often (until I got stocked up!) and it is not to expensive, at least the way I bought it. I used to shop the online scrapbook stores - I kept a BUNCH of them in my Favorite Places and usually at the end of the month, I would surfed them all and check out their sales. I never paid full price for anything. When I'd find it on sale, I'd buy a couple colors. I was paying about $1.89 or less for a 3 foot length. It goes quite far - you can use it 2" wide or cut it in half and have 6 feet of 1"! But usually because of the short lengths you use, you will still get several layouts out of it.
Both of these layouts are quick and easy and can be used for children or all adult themes.