Thanks for the advice - hadn't heard of those tools. Do you think this set of iFlex, iPlastic and iSeasamo for $30 is a good buy? https://www.amazon.com/gp/product/B092C5DGQF

Then a pack of these plastic spudgers. Probably on the cheap side but hopefully OK https://www.amazon.com/gp/product/B0956W1VKF

How essential would you say the clamps are for gluing everything back together? Would a big book or two suffice?