Here are a two very detailed tutorials on how to make an adjustable strap. Creating an adjustable strap is a little tricky because you have to weave in both the adjustable slide and rectangle ring in the correct position. However, these two tutorials do a great job in explaining when
Key rings are so simple yet so complicated. Deciding on the finish is only the first step. Then, you need to decide on the size. So get the inside and outside scoop on key rings, d rings, o rings, etc.
Here are some simple instructions on how to create your own DIY key FOB.