A very simple test tube holder for experiments.
You need a piece of wire - a hanger works well and some pliers. Open the hanger with the pliers until it looks like the picture.
Take the piece of wire and bend it around the pliers.
You want to keep bending until you cross over the wires.
Make the first bend for the grip - about 90 degrees from the handle on both sides.
about 1/3 the way up bend again 90 degrees from the end - towards the handle.
Another 90 degree bend back down on both sides.
bend in or trim the rest.
Start experimenting! You can use a longer piece or add wooden handles to protect from heat.