i'm using a pen & a 5 subject notebook, lol. call me simple but it works for me. each subject in this notebook contains info on certain things going on with the snake's care/setup...
1)feeding/eating log (where i record feeding dates, times and what happens)
2)shed log (where i write down shed dates & any problems/concerns)
3)weight/growth log (where i will keep track of my girl's growth & weight...i dont actually have the scale yet but that's in february's budget)
4)temperature log (where i keep track of dates, times & temps on the warm & cool side in the terrarium)
5)humidity log (where i keep track of dates, times and humidity readings in the terrarium)
i decided to do this cuz if i ever need to take my girl to the vet i have any & all care information regarding my snake that the vet might ask for. also for my own peace of mind as well.
oh & on the front of my notebook, i have some other info regarding my girl - species, morph, sex, hatch date, purchase date & the name of her breeder.