This card incorporates 2 things I'm not good at, mathematical equations and German. So I had to do some online hunting to find what I needed. I could ask the in-laws, however I know they wouldn't keep it secret.
I know the person will appreciate the effort I put into this (hopefully). He's always quoting theories and physics etc in everyday scenarios, so this should humour him. I was lucky to find 2 old German stamp images with 60 on them.
Last year I picked up a 6 and 0 cake sparklers on sale, especially for the occasion. I've never used them before so not quiet sure if I should light them at the top or bottom!?
Whilst his birthday isn't until October, I can't see me having the time to make this in the next couple of months, which are going to be quiet busy. Getting ready for the in-laws visit, other birthdays and an anniversary. Or whatever else life might throw in for luck. Plus I've a pile of pressed flowers that need to be used up before they get passed their best.