Went to the local WalMart today. They have some Nite Ize products on clearance. Bought the AA size flexible fiber optic adapter for $1.75, usually $7. Also got the Nite Ize Pock-Its utility holster for $7.50, usually $13 or $14. This is the full size holster, not the small one. I've had my eye on this holster for some time, glad I waited. Surefire E2 fits nicely in the right front pouch.
They also had a nice Coleman AA light, good weight, good grip, for $3.50, usually $8. Didn't get one of those, but it looks like it would be a good conversion base.
I was recently at Walmart in Kennewick WA, USA, and the sporting goods guy said they had just had a big Mag markdown (again), where they sold Maglite 2AAs for five something US dollars. Beats paying $30 apiece in Denmark, or Aus$50 in Oz.
These markdowns are something to look out for and post.