Just was looking through and saw your transformers stuff recently I just had a thought of Megatron and Optimus prime reaction to darling putting together Gundam model kits
that would be so cute tbh...like I can see them being somewhat curious and fascinated about seeing u create your own lil figure. Ur basically building cybertronian but like itty bitty π
IDW/MTMTE MEG: feel like he would sit down beside you and just watch you do ur thing, ask a few questions about it and u asking him if they got something similar back in his planet (which thinking about it they r kinda like the kits themselves but like....big lol)
enjoying seeing u having fun and letting a lil chuckle when u can't find a piece and he passes it to you. Ask him to give ya a hand he would massshift for that but he would be worried about breaking the thing... he would be happy that u let him participate with u cuz honestly ur the only confort this man has ever after all the shit he went thru (most of it caused by him BUT ANYWAY-)
so pls try to include him in whatever u do even if its just him sitting with u, it gives him peace- YOU give him peace.
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PRIME SERIES OP: I can see him being mass shifted and him reading the instructions book, also if u got like bad instructions he would def point it out and thats when u know the creators were a SHIT making this.... like him just closing his face to the page and squinting "I do not think those pieces should be connecting like that....." and its just the two of you complaining of the bad structure and stuff hehehe
Other than that its just moments like these with you the optimus enjoys, not worrying about the world or injured just him and you doing ur own silly things together
EXTRA NOTES: just realising that meg would definitely judge if he sees a design choice that serves not fighting purpose other than it kjust makes it pretty, my guy's more of practicality over looks me thinks...