V50 user here (didn’t get V60 cause of the larger size) I broke my phone a few months ago, filtered GSMarena for a replacement that’d fullfil my criteria, and Sony Xperias were the the best of the few options that it spat out. Ended up just fixing the V50 for $100, I too will probably hold onto this until it actually breaks.
Morgan recently did a video on handheld milk frothers at different price points (the milk still has to be heated separately), and found even the cheapest one at $5 to produce decent foam (with proper technique). If your kids are old enough to follow instructions, they might be a decent choice? Good luck on the search!