As a start, have a look at the Stronger Together initiative the Supporters Trust launched a couple of months ago. It’s designed to increase fan involvement in the club through raising money to buy shares.
More here:
https://caleythistleonline.com/topic/36186-stronger-together-how-to-contribute/
That allows one off or regular contributions and will build over time.
The Supporters Trust is independent if the club, and has made it clear it will only invest when it feels the time is right.
In the immediate term, the club really needs one of the potential investors referred to in yesterday’s release to chip in.
It is all about cash flow for the next few months, taking enough in to pay out what needs paid, so every season ticket will help, along with buying merchandise, sponsorship etc.