The most standard size puzzle, with the most variety of scenes.
If you want something still somewhat challenging, but not too time consuming. Good to also do with older kids that want to help solve.
These are great ones for your kiddos to tackle (either on their own or with help from you, depending on their age). Or of course, if you just want a really quick one to do yourself :)
I find these to be fun family ones to do together for Halloween or Christmas time :)