>a) the Euro Sign (European currency sign)
Alt+0128 (most fonts)

>b) a tick
Wingdings font, character 252 (Alt+0252)

>c) a blank checkbox
Wingdings font, character 111 or 168 (Alt+0111 or Alt+0168)

>d) a checked checkbox with a tick and
Wingdings font, character 254 (Alt+0254)

>e) a checked checkbox with a cross
Wingdings font, character 253 (Alt+0253). The matching cross is character 251.

HTH.

- della