If you want to make a magic kit that you can easily carry around, then the main things you are: a deck of cards, cup and balls, and a magic drawer(make things disappear)
Step 1: Cards!!!
First things First: if you do make a magic kit then you should probably know a lot of card trick because cards are one if the main things used by magicians.
Step 2: Cups and Balls!!!
The second most important trick is probably the cups and balls trick. (when you make balls travel through solids)
Step 3: Magic Drawer!!!
This is the third most important magicians tool because it is small and pretty amazing! (put any thing in the drawer, close it, then open it and it should of disappeared)
Step 4: Done!!!
Your done!!! All you have to do know is make a place to put it in if you want to.