There is a multitude of DIY phone stands out there and frankly it's pretty easy to make a stand from old credit cards or a piece wood with a groove cut in it. One could say that leaning it up against a book is fine. All these DIY hacks have one common flaw and that's adjustability. The formula for the perfect stand from my point if view is size + simplicity + adjustability. I've seen some other lego stands out there that are either too simple like the block in front block in back on a base plate type or the 20+ piece monstrosity that still only holds your phone only one way, never mind a phablet or a full sized tablet. My design is simple with only 8 moving pieces, adjustable to accommodate any size from the smallest of the phones to the largest of the tablets and yet small enough to fit in your pocket. I call it the Yoga Stand.
Step 1: Only 8 Pieces
I was never really into Technics as a kid but I still managed to find these 2 very common pieces and connectors in my original collection.
Step 2: Make a Little Man.
Two of the long pieces and two connectors are needed to make the body. The other two long pieces and two connectors make part of the legs. Two L pieces and connectors are needed for the arms and legs then it's done. I just added eyes to personify the thing so it would look more like a man. There is actually no right or wrong way to put your leg/arm placement. It all depends on what size of tablet or phone and the variation in which you choose to use it.
Step 3: Different Variations of Use.
Here are some examples showing a few different machines in either portrait or landscape. It even holds a first gen iPad very securely in portrait and landscape.
Step 4: Stick Two Together to Make It Even Sturdier.
Sticking two together by the feet using an additional 2 connectors makes for a stronger base when using the bigger tablets.
Step 5: Go Crazy and Connect Three.
I run a mac air 11 inch. It's done me well but I find it gets a bit hot from time to time. I used to use it with a full size fan underneath but the things just too big. I put three of the Yoga Stands together and sat my laptop on it. It created some space for air to circulate and only raised the angle by a bit. I found this kept my computer cooler than just having it on a table.