Eric Jensen's stuff on brain based learning is good. And practical in our subject as you have lots of short bits in your lesson. I have used TEFL resources in past as the ideas are really creative. There's a good book called Grammar Practice Activities by Penny Ur. MFL Sunderland schools has a good website. BBC Learning zone clips is good too.
Commented on your thread in Chat (may have nc'ed since, can't remember) about small dc and 0.6 over 3 days. I just managed to get a 0.7 maternity cover spread over 5 days. If that is madness I shall soon be finding out. Starting Monday
My youngest dc is reception, the others secondary.
Good Luck Lurking, from what I'm reading it sounds like 5 days might be better as you'll have only a few more lessons than me but spread and since you've got to be in work there's nothing else you can do but chat and make coffee work I think I need to give myself a bit longer to settle in. Swallow pride and get a few people to watch me teach swallows fist