One of my all time favourite gadgets is the Clover Bias Tape maker for making Bias Stems for Appliqué Quilting. Combined with a nice hot iron and a bit of starch you can make continuous bias or just a few strips of bias to make into stems. To be honest I find that a 1/2m piece of fabric cut on the bias will give me long enough stems for most applique patterns that I attempt.
So how do they work. Prepare your fabric and make a cut on the bias using the 45 degree mark on your quilting ruler. Then cut a strip of fabric the required width for the for the maker you are using. I have one of every size but probably use the 9mm and 12mm ones the most.
Feed the fabric through the back of the tape maker and use a pin to guide it to the end. It is probably a good idea to spray starch the fabric to begin with so that tape stays folded longer and you don’t have to redo the process.
I tend to do this a little differently than the instructions on the packet. I like to turn the tape maker over with the front of the tape facing up and the folded edges down on the board. I feed a bit through pressing as I go, then when I have enough at the edge of the iron to hold I leave the iron on the board and pull the tape slowly through. I find this stretches the bias slightly and gives a nice crisp fold with the help of the spray starch.
I am currently pressing heaps of these little suckers in various sizes to use in the border of an applique quilt that I am working on. It gets a bit boring but by the end I will have a nice supply of stems and vines to applique in place. You can purchase iron on strips to put on the back of the tape to keep in place however I find that dots of Roxanne glue are better at keeping the stems securely in place before they are stitched down and it is a cheaper option.