I am an avid supporter of a day in hand. I have taken part inthe photo shoot, the day in hand relay and am really looking forward to SSHH Saturdays.
If you are straight allies you can take part, find someone of the same sex and ask them if you can hold their hand. Take a picture logon www.adayinhand.com and have the picture uploaded.
If you wanted you could hold someones hand through a very public place and watch the reactions you get. If people ask what you are doing then you can tell them about the campaign.