Lexus commissioned a fully functional electric car built from laser cut cardboard. It comprises 1700 individual pieces and took 3 months, I imagine the builders were quite card-bored by the end of assembly.
LesMarco kindly shared this file for a sugar skull pen holder through the thingiverse website. It's a good example of slicing a shape and decorating it appropriately. Being cut from Poplar plywood the details could be coloured in nicely with some fine tips pens to add a real flourish of colour. A handy pot lot this is a good way to despens stationary as required.
There are a couple of giant hand builds around but I like this one from instructables user musicandsky because they've gone for a purely Halloween theme scare style. When combined with the skull mask, I imagine they had a lot of fun out and about in the evening. You'd have to pick your party carefully though, they should be good with finger food but undoubtedly clawful with drinks.
The decorations on these bottle openers , from Fowl Play Enterprises are all laser cut, it's a great example of how a little bit of finishing can make all the difference. Looking at the colours and the styles it's not immediately obvious that they were lasered. The puns appeal to me too, although making more alcohol related jokes already gives me a sense of deja brew.