Hello, I am not sure if this will be of your interest, but if you can squeeze a bit of time you could always learn how to make them!. The Old School Club has a few courses, how to make a cushion, a curtain or a roman blind. You can chose how "difficult" you want the curtain to be, if this is above what is tought at the course, you can always come back to get more advice and to finish your project. We made beautiful curtains during the last course (lined, with pencil pleat) and the mums were very happy with their results. We also have a creche, so if you would like to bring your little one we can look after him/her. For more information you can visit
www.theoldschoolclub.co.uk.
Fabrics Galore is a good local source. If you don't mind buying online, My Fabric House and Fabric Rehab have fantastic designs for children (at very reasonable prices).
Whatever you do, good luck with your curtains!
Regards,
Inma
The Old School Club