I’m in my 50’s and I still buy toys for myself if I want them (in moderation of course these days) like I was begging my mama at 6 for them lol. Toys however usually means electronics of some sort (phones, tablets, laptops)… but sometimes actual toys lol. I think “kid at heart” means treating yourself to things you want because you only live once and you need to have all the fun you can while you are here.