I know this sounds horrible, but the tedium of repetition in the last few chapters is getting to me. We've gotten at least two descriptions of how the Tabernacle was made, and two recaps of the major laws handed down by God to the Israelites. I'm sure the extra accounts are for emphasis or some other important reason, but I'm afraid it is lost on me at present.
I will note, though, that the fact that the needs of the Tabernacle were met and the Israelites were still giving is pretty cool. Maybe after everything they had been through the people finally felt like giving back to God for all He had done for them.