This is the one I bought and have been using for a few years now:
https://www.homedepot.com/p/BLACK-DECKER-500-Watt-Portable-Power-Station-PPRH5B/203613410Personally, I love it! I've used it to run a booth full of string lights for three days during working hours and it hasn't failed. Also charged my phone and my Square card chip reader too during that time and it held up.
Like someone else said, I don't know how much power it would take a crikut to run, but I'm sure if this was charged up all the way and you only turned it on whenever you really needed it, then I'm sure it'd be fine. :D
When not using this during shows I stow it in my car because it also has the capability to jump a dead battery. Or to fill your bicycle tires, which I've used many times! It's a nifty little thing to have around, for sure!