Sooo, is ur kid using a tablet or PC?? 1. STEMpedia PictoBlox: Best ML extensions.
2. Makeblock mBlock 5: Better block-to-Python logic. PictoBlox is literally better for AI tho!

For your situation, I'd suggest Google Teachable Machine vs Code.org AI for Oceans. Teachable Machine offers image-recognition training while AI for Oceans is a structured logic game. Since both are free, they're great value, but the Code.org option is definately better for a 7-year-old cuz it's simple and skip complex typing. gl!

In my experience, I tried Lego Boost Creative Toolbox 17101 Building and Coding Kit but it was $160 and honestly felt overpriced. Sphero BOLT App-Enabled Robot is cool but the AI logic is kinda weak. Best choice is Machine Learning for Kids because it lets them train actual models for text or images and use them as Scratch blocks. Unfortunately, most "AI" toys are basically marketing gimmicks... stick to free visual tools!!

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Regarding what #5 said about... well, there isnt much to go on there, but Ive been through this exact phase with my youngest and learned some hard lessons. I spent way too much money on flashy AI kits that ended up being glorified paperweights because the apps were buggy or the company went bust. I would suggest being very careful with anything that claims to be a dedicated AI robot for kids. Most of them are just scripts. I found that a DIY approach with stable hardware is way more reliable:

• BBC microbit v2 Go Bundle is about $25 and has a great ecosystem. You can use it with their web-based machine learning tools to teach it simple voice commands or gestures.
• HuskyLens AI Vision Sensor is a bit pricier but it connects right to visual coding blocks and handles face or object tracking internally. Make sure to stick to the established brands. Ive seen too many parents get sucked into Kickstarter projects that never ship or have terrible privacy standards. Its better to have something slightly less flashy that actually works every time they turn it on. Just watch out for the cloud-based stuff, some of those services start charging a subscription fee after the first month.

Adding my two cents here... Quick question tho, are you guys mainly using a desktop or do you prefer using a tablet? It makes a big difference for how reliable the apps actually are. Honestly, if you want something that isnt gonna glitch out every five minutes, just go with VEX. You really cant go wrong with their ecosystem because its super stable and they actually support their software long-term. A lot of the smaller AI start-ups have cool ideas but their apps are usually a mess... basically just look for the big names in education if you want it to work. Let me know what hardware you're on and I can help you narrow it down!