Came across this last night - decent 40W practice amp with a plethora of smart features, highly rated by many reviewers. Description from Amazon:
About this item
Spark learns your style and feel, then generates authentic bass and drums to accompany you
Access over 10000 killer guitar, bass, amp and effect presents, so you can play pristine melodies, crunchy chords and soaring leads
Choose any songs and spark smart app will automatically display the guitar chords in real time
Spark is a powerhouse 40 watt combo, which includes onboard tone stack controls, tone starter present programs, a built-in tuner, tap tempo and more
Connect spark and easily record your ideas on the computer
Good value at $359.99, multiple online retailers/eBay selling for between $449 and the $569. Hopefully inspires my kids to practice more. At the very least a nice toy for me.