In the process of contacting schools that would like to be listed in my book, I got an enquiry from a language school called BAKER STREET, that have short-term openings this summer for teacher trainers.  From what I understand they pay 35? per hour. Here’s the info:

We are planning to run week long methodology and language awareness
courses in Valladolid, from 16-20 and 23-27 May and in Burgos, 17-23
July. We would welcome contacts from teachers who wish to work on these
courses and who have experience in Teacher training, Business English,
Skills Workshops for adults, including pronunciation, presentation
techniques or those who feel they have some special skill like film,
video, design or drama which could be introduced into English classes.

The July course offers accommodation and full board, the May ones do not
but we would be able to offer a travel (within Spain) and accommodation
allowance or book these ourselves for suitable candidates.

If interested, please send your CV, contact details and availability to
me at josh@bkstreet.com
http://www.bkstreet.com