Are YOU a closeted trans person who want to do stuff without others finding out, or maybe just want soem adivce and gender affirming activities?? if so, here are some things u can do:
(btw i am a hyper-masculine trans boy, so most of these are mainly intended for other hyper-masc trans guys, but androgynous, fem, all or none of the above folks can do thesr too)
cologne, perfume body wash or shampoo scents. mint, coconut, lemon, green apple, some nuts, woody, and most oceany scents are considered unisex in most of society so try getting those ones ones if u can. if u are available to get the products w sents you like then get those, but hide them if you have to
learn sewing. if you know how to sew, u can tailor your colthes to ur liking, or even make clothes you arent allowed to get them. plus you saving money and for some it can even be gender affirming!
practicing writing your preferred name. if you ever do come out, youll be prepared for any writing with your name on it. it also can be very gender affirming and even help you see which name fits you best
watching content with close ones. if there are movies or shows that are widely considered to be "daddy-daughter" movies, "mother-son" movies, or any other variations that suit you can ur family dynamic. like watching contents that are considered to be "mother-daughter" shows with your mom as closeted trans girl, or watching "sister-brother" movies with your sister as closeted trans boy
practicing traditions as ur gender. if your family, friends or community do tradition that are ofteb associated with your gender, then do those traditions. especially if it is a cultural tradition of some sort, people are less likely to view it as odd, as they will think you are simply honoring your culture
styling your hair to your liking. if u want to cut your hair, but arent cant/not readt to yet, you can wear hats and hide thr hair in it to look like u have shorter hair. or if you want to grow out your hair but cant/not ready yet, try using extensions/wigs, braiding, or slicking ur hair to look like you have longer hair
hand me downs. if your parents, siblings or friends have things they dont need anymore that you would kill to have, take then!! if your afraid of them becoming suspicious, say that you want to save money, or offer to throw those things away for them, but secretly keep them for yourself
changing your pfp or even username to a fictional character. these is especially good if youve named yourself after this character, and nobody will find it suspicious as you just totally really like them a normal amount
uhhh thats all i can think of rn. if u have anything u want to share please do in the comments!!