Always taking a Wiz's page

I was wondering if anyone has a good way to keep all of your summoned creatures organized. In a few fights, I've had as many as 9 lantern archons summoned (ranged touch attacks are great), each with two attacks, on top of the other spells I was casting. 18+ attacks/round gets to be a bit much, but it saved the party last game.

The way I keep organized is to copy the stats of the most-used monsters into a binder arranged by level of the summoning spell. I'll use a small dry erase board to mark what I've summoned, their hit points, how many rounds they've been around, and what their attack and damage rolls are (I roll these ahead of time). When it comes to my turn, I'll tell the DM what the minions are targeting (usually same target to keep things simple), the ACs that my minions hit, and add up the damage appropriately.

I've had other players roll attacks for some of my minions, but I don't like having to take their attention away from what's going on so they can do the work I'm responsible for.

Has anyone else come across a simpler way to handle all the number crunching? I was also thinking of coming up with formulas for determining average damage per round and just multiplying times the number of minions, but I doubt the DM will go for that.

There are a few spell combinations I use often, and I was wondering what other combinations or just creative uses for spells work well for you. Here's a few to get us started...

-Web, then summon swarm (spiders) or
-Black tentacles, then summon swarm (bats) (the tentacles can't grapple the bats)

-Invisibility, reduce item, and permanency on a giant caltrop. Drop it in a square, and let enemies come to you to impale themselves on it.

-Reduce item and permanency on an iron wall with arrow slits = instant cover for your mages or archers

-don't forget that earth elementals can burrow through stone, which means they can burrow through walls (also useful if you can't pick a door's lock), or they can burrow through a foundation to topple most buildings :). Not bad for a 2nd level spell (summon monster 2)