Connecting Threads sold a pattern & maybe also a kit to make an ironing caddy. It had heat proof material on the inside with heat proof batting in the middle & a fabric of your choice for the outside fabric. It doubled as an ironing surface & when done, it folded up with handles to hold your hot iron for travel. Maybe if you check with them it may still be available. Basically it was a rectangular shape with the corners cut off & a handle on each of the 2 longer sides & you folded up the ends first, then the sides met in the centre with a hook & eye (or something like that) even some velcro to hold it together & with the 2 handles, you were ready to go. I think someone even had downloaded the pattern here or maybe on youtube. Try Youtube for Ironing Caddy & see if something is there but I definitely remember Connecting Threads having it on their site too & in their catalogue. Looked very simple to make.