Posting this here so it helps people with the museum crash issue when donating.
Donate your items.
Pause the game immediately.
Select "I'm stuck".
The game will save and send you back home, and will likely crash, but when you load back in, the problem is fixed. The cutscene plays out straight from your house and you're able to skip it and continue with the game as normal...
NOTE: When you get past this and complete your next part of the quest for the museum (50 items handed in) - DO NOT claim it in the menus until after you've handed allllllll of your donations in. There's a few folks here that are reporting crashing once the museum has been upgraded. Make sure you hand everything in, save, and then claim it.
...I accept thanks in the form of worship.