you know especially in ponds those small roostertails and panther martins work great... they can work em like a spinnerbait or jig em up and down....
A topwater frog is exciting to see that strike... maybe a stanley ribbit or zoom toad... Zara spook for sure.. and chugger bait like a PoP R works great early....
Next I'd stock a few spinnerbaits in their box... booyah, terminator, chatterbait, etc...
But I think my favorite lures now you should add are ... fluke(watermelon seed), senko(watermelon), and powerworm... (blue fleck) 7" I'd also buy a pack of 10" ones if any huge bass are around... 3/0 hooks usually... but on the big worms have to go with 4 or 5/0....
If you wanted to buy a cool topwater that would get their interest up.. go to ebay and look for a Powerpak lure... believe it or not... it's kinda a gimmick lure with the string... when you pop it the tail flutters and it goes in a circle for a while... cool lure and it does catch big bass... I caught a 7 lb. bass one day on it and had another pop it way up in the air... around 5 bux on ebay...
I still like the old tiny torpedo topwater lures.. maybe you could find a few of those??
Also a few rattle traps... although I do catch a lot more fish on the rattlin raps... chrome/blue
And last but not least I do catch a lot of fish drop shot fishing... many times you catch smaller fish this way, but the name of the game with kids is catching... you can also wacky rig with the drop shot...
My fav. is both zoom products... zoom finesse worm in watermelon... and zoom trick worm in candy color... a reg worm hook will work, but I like the small dropshot hooks for this technique... also try it with Senkos ( a good brand if trying to save money is the Strike King Zero...)
Last, we got craws and they work great in ponds... I'd buy a few packs of Baby paca craws, and Berkley chigger craws,,,, probably can't find the Gene Larew salt craws, but they are the best craw ever if you come across any...
Good luck