Fingerin wiv extras

hi this is my first story and it is 100%% true.

i can have sex do anyhting sexual with my bf when ever either of us wants to but i also like to finger myself when he is out.
we also do this together but one time i was experimenting and i used a pen, over time i used more and more objects such as paint brushes toothbrushes etc all brand new and only used for this reason.
is this normal and does anybody know anymore pleasurable things to use?