Tal 2M - collimation

Apologies, but my new scope has probably contributed to the gathering of the
orange cloudy things upstairs. It will hopefully wear off soon.

I need to collimate a Tal 2m, and this looks reasonably straight forward.
(if you have long arms or suitable assistant.)

Can anyone recommend a simple and cheap collimation tool that might help
with this operation?

Thanks
--
Beeb
"You can see a million miles tonight, but you can't get very far"
Adam Duritz, Counting Crows - Mrs Potter's Lullaby