I feel spoiled over here. I get my wife and kids into the feeder thing with me.
My 3 and 5 year old boys love watching the big fish hunt for the little ones. What you need to do is let her pick some monster fish that need feeders too. 
My wife lets me make up my own budget too. Long as I don't go do something crazy like spend $500 in 1 shot without letting her know, she lets me buy whatever I like.
You could always ask her to run to the store to pick up something and scoop a few feeders out while she's gone.
Edit: Make sure she takes the kids with her. Don't need them snitching on you when she gets back.
My 3 and 5 year old boys love watching the big fish hunt for the little ones. What you need to do is let her pick some monster fish that need feeders too. My wife lets me make up my own budget too. Long as I don't go do something crazy like spend $500 in 1 shot without letting her know, she lets me buy whatever I like.
You could always ask her to run to the store to pick up something and scoop a few feeders out while she's gone.

Edit: Make sure she takes the kids with her. Don't need them snitching on you when she gets back.
