You need a small plate or dish, old scissors or garden secateurs, cotton wool, small flower heads and water. It's fun to get a basket and walk around the garden with or without the kids to find the flowers to use.
Put the cotton wool onto the plate and wet it until it's mushy.
I put some very sweet smelling green tips from a shrub I have no clue what it's called and then in the very middle I put some tips from cacti that was looking a bit sick and was happy to be taken away from it's misery and put to use.
I'm not normally one to boast, but I won the lolly/candy!