You will need a hammer,
wire snips,
wood your desired size about 1cm thick and about 10 cm across,
elastic bands 3>,
1cm nails.
Hammer one nail about 1cm in.
Then hammer another nail on the opposite side on the other end as pictured.
Some more views of it.
Lay pieces out like this.
Hold them together with elastic bands (2 or more).
Just snip the nail down a bit for more reliability.
Pop a rubber band over the nail at the top then tuck it in the gap between the two bits of wood.
Have fun!!!
Get ready for a mission!!!