Good Luck - my mom turned 80 last year and refused to let us give her a party. The day of her birthday, she "allowed" us to call her last two living brothers to invite them out top eat.
My one Uncle made her a bunch of chocolate (white) lolly pops
she was thrilled. They are not hard to do, molds come in every hobby/interest that you can think of - what is you FIL's hobby/interest? Two years ago at my niece's wedding, I made little chocolate frames with their engagement picture (printed out on edible waffers) they were a hugh hit!!