Hi Kaysha,
Pm me your email address so that I can send you my templates and icons.
Mostly, I make my own templates for picture backgrounds/icons. They are cartoon type since Tiger prefers them that way.
The grid ones I printed from tot packs (you know, Carisa's) cause they are already the perfect size and oh-so-cute.
Show the template for 6-8 secs, then present the empty background for the child to place the icons/items.
Most importantly, make a big fuss if he gets it all right. "Good effort" "Wow, you remembered!" "You tried so hard, that's great"
I also use the Ipad for matching card games. No mess and so much faster than using physical cards. We are using 24 cards at the moment. I just start tapping and naming the cards from the upper right hand side. I do it really fast, probably about 1/3 of a sec for each card. If he remembered the pairing card's location, he will tap it. Going really fast will help with focusing, esp when we are out and about. The last time we did this in public, the lady next to us dropped her jaw

She probably never heard about this forum.
Like Mandaplus suggested, we also use the brainbox cards. I flash for 6 secs and then ask simple questions like how many birds were there? What colour was the umbrella? You can use any picture books or magazines.
Mandala are great too but Tiger is just getting the hang of it.