If you are looking for something fun to do tonight I highly recommend The Denver Botanic Gardens at Chatfield. We missed the pumpkin festival last year because Jack was sick. However, we ended up going there on a Friday night and Jack basically had the patch to himself :)
Tonight, they have a corn maze going on until 9pm and a haunted field of the undead until 11pm. Check out their website for all of the weekend events!
Happy Halloween!